120002102100 has 144 divisors (see below), whose sum is σ = 402557984640. Its totient is φ = 30609216000.

The previous prime is 120002102093. The next prime is 120002102131. The reversal of 120002102100 is 1201200021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

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, 904101 + ... + 1028300.

It is an arithmetic number, because the mean of its divisors is an integer number (2795541560).

Almost surely, 2^120002102100 is an apocalyptic number.

120002102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120002102100 is an abundant number, since it is smaller than the sum of its proper divisors (282555882540).

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

120002102100 is a wasteful number, since it uses less digits than its factorization.

120002102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932447 (or 1932434 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 120002102100 its reverse (1201200021), we get a palindrome (121203302121).

The spelling of 120002102100 in words is "one hundred twenty billion, two million, one hundred two thousand, one hundred".