-12 is an even number.
-12 is a Harshad number, which means it is divisible by the sum of its digits (1 + 2 = 3, and -12 is divisible by 3).
In binary, -12 is represented as 1111111111111111111111111111111111111111111111111111111111110100.
In hex, -12 is represented as fffffffffffffff4.