111020101988 has 24 divisors (see below), whose sum is σ = 202845229440. Its totient is φ = 53067009600.

The previous prime is 111020101987. The next prime is 111020102009. The reversal of 111020101988 is 889101020111.

It is not an unprimeable number, because it can be changed into a prime (111020101987) 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, 169328 + ... + 500711.

It is an arithmetic number, because the mean of its divisors is an integer number (8451884560).

Almost surely, 2^111020101988 is an apocalyptic number.

It is an amenable number.

111020101988 is a deficient number, since it is larger than the sum of its proper divisors (91825127452).

111020101988 is a wasteful number, since it uses less digits than its factorization.

111020101988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671867 (or 671865 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 32.

The spelling of 111020101988 in words is "one hundred eleven billion, twenty million, one hundred one thousand, nine hundred eighty-eight".