21100102021300 has 72 divisors (see below), whose sum is σ = 47265374322432. Its totient is φ = 8167583424000.

The previous prime is 21100102021253. The next prime is 21100102021363. The reversal of 21100102021300 is 312020100112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254756895 + ... + 254839705.

It is an arithmetic number, because the mean of its divisors is an integer number (656463532256).

Almost surely, 2^{21100102021300} is an apocalyptic number.

21100102021300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21100102021300 is an abundant number, since it is smaller than the sum of its proper divisors (26165272301132).

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

21100102021300 is a wasteful number, since it uses less digits than its factorization.

21100102021300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165049 (or 165042 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21100102021300 its reverse (312020100112), we get a palindrome (21412122121412).

The spelling of 21100102021300 in words is "twenty-one trillion, one hundred billion, one hundred two million, twenty-one thousand, three hundred".