111111099992 has 32 divisors (see below), whose sum is σ = 216145480320. Its totient is φ = 53490501120.

The previous prime is 111111099991. The next prime is 111111100007. The reversal of 111111099992 is 299990111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111099991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1088273 + ... + 1185984.

It is an arithmetic number, because the mean of its divisors is an integer number (6754546260).

Almost surely, 2^111111099992 is an apocalyptic number.

It is an amenable number.

111111099992 is a deficient number, since it is larger than the sum of its proper divisors (105034380328).

111111099992 is a wasteful number, since it uses less digits than its factorization.

111111099992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274491 (or 2274487 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 44.

The spelling of 111111099992 in words is "one hundred eleven billion, one hundred eleven million, ninety-nine thousand, nine hundred ninety-two".