12 (twelve) is the natural number following 11 and preceding 13.
Twelve is the 3rd superior highly composite number, the 3rd colossally abundant number, the 5th highly composite number, and is divisible by the numbers from 1 to 4, and 6, a large number of divisors comparatively.
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The Paladins, also called the Twelve Peers (French: Douze Pairs), are twelve legendary knights, the foremost members of Charlemagne's court in the 8th century. They first appear in the medieval (12th century) chanson de geste cycle of the Matter of France, where they play a similar role to the Knights of the Round Table in Arthurian romance. In these romantic portrayals, the chivalric paladins represent Christianity against a Saracen (Muslim) invasion of Europe. The names of the paladins vary between sources, but there are always twelve of them (a number with Christian associations) led by Roland (spelled Orlando in later Italian sources). The paladins' most influential appearance is in The Song of Roland, written between 1050 and 1115, which narrates the heroic death of Roland at the Battle of Roncevaux Pass.
The legend is based on the historical Umayyad invasion of Gaul and subsequent conflict in the Marca Hispanica between the Frankish Empire and the Emirate of Córdoba. The term paladin is from Old French, deriving from the Latin comes palatinus (count palatine), a title given to close retainers.
The duodecimal system, also known as base twelve or dozenal, is a positional numeral system using twelve as its base. In duodecimal, the number twelve is denoted "10", meaning 1 twelve and 0 units; in the decimal system, this number is instead written as "12" meaning 1 ten and 2 units, and the string "10" means ten. In duodecimal, "100" means twelve squared (144), "1,000" means twelve cubed (1,728), and "0.1" means a twelfth (0.08333...).
Various symbols have been used to stand for ten and eleven in duodecimal notation; this page uses A and B, as in hexadecimal, which make a duodecimal count from zero to twelve read 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, and finally 10. The Dozenal Societies of America and Great Britain (organisations promoting the use of duodecimal) use turned digits in their published material: 2 (a turned 2) for ten (dek, pronounced /dɛk/) and 3 (a turned 3) for eleven (el, pronounced /ɛl/).
11 (eleven) is the natural number following 10 and preceding 12. It is the smallest number whose name has three syllables.
13 (thirteen) is the natural number following 12 and preceding 14.
Folklore surrounding the number 13 appears in many cultures around the world: one theory is that this is due to the cultures employing lunar-solar calendars (there are approximately 12.41 lunations per solar year, and hence 12 "true months" plus a smaller, and often portentous, thirteenth month). This can be witnessed, for example, in the "Twelve Days of Christmas" of Western European tradition.
A dozen (commonly abbreviated doz or dz) is a grouping of twelve.
The dozen may be one of the earliest primitive integer groupings, perhaps because there are approximately a dozen cycles of the Moon, or months, in a cycle of the Sun, or year. Twelve is convenient because it has a maximal number of divisors among the numbers up to its double, a property only true of 1, 2, 6, 12, 60, 360, and 2520.