111100212090 has 64 divisors (see below), whose sum is σ = 338591128320. Its totient is φ = 25394333760.

The previous prime is 111100212089. The next prime is 111100212103. The reversal of 111100212090 is 90212001111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29389701 + ... + 29393480.

It is an arithmetic number, because the mean of its divisors is an integer number (5290486380).

Almost surely, 2^111100212090 is an apocalyptic number.

111100212090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111100212090 is an abundant number, since it is smaller than the sum of its proper divisors (227490916230).

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

111100212090 is a wasteful number, since it uses less digits than its factorization.

111100212090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58783204 (or 58783198 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 111100212090 in words is "one hundred eleven billion, one hundred million, two hundred twelve thousand, ninety".