102020102120100 has 144 divisors (see below), whose sum is σ = 303162375352256. Its totient is φ = 26469519552000.

The previous prime is 102020102120071. The next prime is 102020102120147. The reversal of 102020102120100 is 1021201020201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 890395815 + ... + 890510385.

Almost surely, 2^{102020102120100} is an apocalyptic number.

102020102120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102020102120100 is an abundant number, since it is smaller than the sum of its proper divisors (201142273232156).

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

102020102120100 is a wasteful number, since it uses less digits than its factorization.

102020102120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194846 (or 194839 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102020102120100 its reverse (1021201020201), we get a palindrome (103041303140301).

The spelling of 102020102120100 in words is "one hundred two trillion, twenty billion, one hundred two million, one hundred twenty thousand, one hundred".