-111 is an odd number.
-111 is a Harshad number, which means it is divisible by the sum of its digits (1 + 1 + 1 = 3, and -111 is divisible by 3).
In binary, -111 is represented as 1111111111111111111111111111111111111111111111111111111110010001.
In hex, -111 is represented as ffffffffffffff91.