102020021120 has 64 divisors (see below), whose sum is σ = 243971609040. Its totient is φ = 40794624000.

The previous prime is 102020021101. The next prime is 102020021141. The reversal of 102020021120 is 21120020201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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, 2056124 + ... + 2105156.

Almost surely, 2^102020021120 is an apocalyptic number.

102020021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102020021120 is an abundant number, since it is smaller than the sum of its proper divisors (141951587920).

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

102020021120 is an equidigital number, since it uses as much as digits as its factorization.

102020021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52303 (or 52291 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102020021120 its reverse (21120020201), we get a palindrome (123140041321).

The spelling of 102020021120 in words is "one hundred two billion, twenty million, twenty-one thousand, one hundred twenty".