Twelve (12) is a positive integer one more than 11 and one less than 13.


12 is a highly composite number, meaning it has more factors than any lesser number (it has 6 factors). The previous highly composite number is 6, and the next is 24.

12's factorization is 22*3.

A set of 12 objects is often called a dozen. That type of set gets its own name because many things are grouped in twelve: for example, twelve months in a year, twelve inches in a foot, twelve eggs in a typical container, etc.

There are 12 size-3 Latin squares.

In googology Edit

In Greek-based number-naming systems, 12 is associated with prefix "dodeka-", and with prefix "duodec-" in Latin systems.

Being highly divisible, 12 shows up frequently, being the number of hours on a typical clock.

12 is the first abundant number, that is, its proper divisors add up to more than itself. The next abundant number is 18.

See also Edit