102111112020 has 48 divisors (see below), whose sum is σ = 287665197120. Its totient is φ = 27062574336.

The previous prime is 102111111979. The next prime is 102111112027. The reversal of 102111112020 is 20211111201.

102111112020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102111111987 and 102111112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111112027) 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, 5210625 + ... + 5230184.

It is an arithmetic number, because the mean of its divisors is an integer number (5993024940).

Almost surely, 2^102111112020 is an apocalyptic number.

102111112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111112020 is an abundant number, since it is smaller than the sum of its proper divisors (185554085100).

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

102111112020 is a wasteful number, since it uses less digits than its factorization.

102111112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10440984 (or 10440982 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102111112020 its reverse (20211111201), we get a palindrome (122322223221).

The spelling of 102111112020 in words is "one hundred two billion, one hundred eleven million, one hundred twelve thousand, twenty".