111902124020 has 48 divisors (see below), whose sum is σ = 246373964928. Its totient is φ = 42611775360.

The previous prime is 111902123981. The next prime is 111902124053. The reversal of 111902124020 is 20421209111.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 479399 + ... + 673518.

It is an arithmetic number, because the mean of its divisors is an integer number (5132790936).

Almost surely, 2^111902124020 is an apocalyptic number.

111902124020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111902124020 is an abundant number, since it is smaller than the sum of its proper divisors (134471840908).

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

111902124020 is a wasteful number, since it uses less digits than its factorization.

111902124020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153160 (or 1153158 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 111902124020 in words is "one hundred eleven billion, nine hundred two million, one hundred twenty-four thousand, twenty".