111000011988 has 48 divisors (see below), whose sum is σ = 274580708864. Its totient is φ = 34838709120.

The previous prime is 111000011987. The next prime is 111000012059. The reversal of 111000011988 is 889110000111.

It is a super-2 number, since 2×111000011988² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000011981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4018495 + ... + 4046022.

Almost surely, 2^111000011988 is an apocalyptic number.

It is an amenable number.

111000011988 is an abundant number, since it is smaller than the sum of its proper divisors (163580696876).

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

111000011988 is a wasteful number, since it uses less digits than its factorization.

111000011988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8064592 (or 8064590 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 30.

The spelling of 111000011988 in words is "one hundred eleven billion, eleven thousand, nine hundred eighty-eight".