102020002012120 has 64 divisors (see below), whose sum is σ = 229789056025440. Its totient is φ = 40764627763200.

The previous prime is 102020002012087. The next prime is 102020002012129. The reversal of 102020002012120 is 21210200020201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102020002012120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020002012129) 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, 238272630 + ... + 238700410.

Almost surely, 2^{102020002012120} is an apocalyptic number.

102020002012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102020002012120 is an abundant number, since it is smaller than the sum of its proper divisors (127769054013320).

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

102020002012120 is a wasteful number, since it uses less digits than its factorization.

102020002012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434116 (or 434112 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102020002012120 its reverse (21210200020201), we get a palindrome (123230202032321).

The spelling of 102020002012120 in words is "one hundred two trillion, twenty billion, two million, twelve thousand, one hundred twenty".