102120021021100 has 36 divisors (see below), whose sum is σ = 221719522025008. Its totient is φ = 40826058840000.

The previous prime is 102120021021059. The next prime is 102120021021127. The reversal of 102120021021100 is 1120120021201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274182576 + ... + 274554775.

Almost surely, 2^{102120021021100} is an apocalyptic number.

102120021021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120021021100 is an abundant number, since it is smaller than the sum of its proper divisors (119599501003908).

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

102120021021100 is a wasteful number, since it uses less digits than its factorization.

102120021021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548739226 (or 548739219 counting only the distinct ones).

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

Adding to 102120021021100 its reverse (1120120021201), we get a palindrome (103240141042301).

The spelling of 102120021021100 in words is "one hundred two trillion, one hundred twenty billion, twenty-one million, twenty-one thousand, one hundred".