102021112120 has 32 divisors (see below), whose sum is σ = 234431496000. Its totient is φ = 39940179328.

The previous prime is 102021112117. The next prime is 102021112133. The reversal of 102021112120 is 21211120201.

It is a super-2 number, since 2×102021112120² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102021112120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27131395 + ... + 27135154.

It is an arithmetic number, because the mean of its divisors is an integer number (7325984250).

Almost surely, 2^102021112120 is an apocalyptic number.

102021112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021112120 is an abundant number, since it is smaller than the sum of its proper divisors (132410383880).

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

102021112120 is a wasteful number, since it uses less digits than its factorization.

102021112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54266607 (or 54266603 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102021112120 its reverse (21211120201), we get a palindrome (123232232321).

The spelling of 102021112120 in words is "one hundred two billion, twenty-one million, one hundred twelve thousand, one hundred twenty".