111109100920 has 32 divisors (see below), whose sum is σ = 250071098400. Its totient is φ = 44430196608.

The previous prime is 111109100891. The next prime is 111109100951. The reversal of 111109100920 is 29001901111.

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, 285699 + ... + 551218.

It is an arithmetic number, because the mean of its divisors is an integer number (7814721825).

Almost surely, 2^111109100920 is an apocalyptic number.

111109100920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111109100920 is an abundant number, since it is smaller than the sum of its proper divisors (138961997480).

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

111109100920 is a wasteful number, since it uses less digits than its factorization.

111109100920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840247 (or 840243 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 25.

The spelling of 111109100920 in words is "one hundred eleven billion, one hundred nine million, one hundred thousand, nine hundred twenty".