102121012120 has 64 divisors (see below), whose sum is σ = 246219613920. Its totient is φ = 37982337024.

The previous prime is 102121012067. The next prime is 102121012121. The reversal of 102121012120 is 21210121201.

It is a super-2 number, since 2×102121012120² (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 102121012120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121012121) 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, 848247 + ... + 961126.

Almost surely, 2^102121012120 is an apocalyptic number.

102121012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121012120 is an abundant number, since it is smaller than the sum of its proper divisors (144098601800).

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

102121012120 is a wasteful number, since it uses less digits than its factorization.

102121012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809484 (or 1809480 counting only the distinct ones).

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

Adding to 102121012120 its reverse (21210121201), we get a palindrome (123331133321).

The spelling of 102121012120 in words is "one hundred two billion, one hundred twenty-one million, twelve thousand, one hundred twenty".