111111202012120 has 64 divisors (see below), whose sum is σ = 254512526785920. Its totient is φ = 43647516186624.

The previous prime is 111111202012087. The next prime is 111111202012169. The reversal of 111111202012120 is 21210202111111.

It is a junction number, because it is equal to n+sod(n) for n = 111111202012094 and 111111202012103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80975824 + ... + 82336543.

It is an arithmetic number, because the mean of its divisors is an integer number (3976758231030).

Almost surely, 2^{111111202012120} is an apocalyptic number.

111111202012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111111202012120 is an abundant number, since it is smaller than the sum of its proper divisors (143401324773800).

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

111111202012120 is a wasteful number, since it uses less digits than its factorization.

111111202012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163312684 (or 163312680 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 111111202012120 its reverse (21210202111111), we get a palindrome (132321404123231).

The spelling of 111111202012120 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred two million, twelve thousand, one hundred twenty".