111111112120 has 32 divisors (see below), whose sum is σ = 250011493200. Its totient is φ = 44442402048.

The previous prime is 111111112097. The next prime is 111111112139. The reversal of 111111112120 is 21211111111.

It is a self number, because there is not a number n which added to its sum of digits gives 111111112120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062751 + ... + 1162609.

Almost surely, 2^111111112120 is an apocalyptic number.

111111112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111111112120 is an abundant number, since it is smaller than the sum of its proper divisors (138900381080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111111112120 is a wasteful number, since it uses less digits than its factorization.

111111112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127687 (or 127683 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111111112120 its reverse (21211111111), we get a palindrome (132322223231).

The spelling of 111111112120 in words is "one hundred eleven billion, one hundred eleven million, one hundred twelve thousand, one hundred twenty".