21000202002160 has 20 divisors (see below), whose sum is σ = 48825469655208. Its totient is φ = 8400080800832.

The previous prime is 21000202002139. The next prime is 21000202002161. The reversal of 21000202002160 is 6120020200012.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000202002161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131251262434 + ... + 131251262593.

Almost surely, 2^{21000202002160} is an apocalyptic number.

21000202002160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000202002160 is an abundant number, since it is smaller than the sum of its proper divisors (27825267653048).

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

21000202002160 is a wasteful number, since it uses less digits than its factorization.

21000202002160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262502525040 (or 262502525034 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21000202002160 its reverse (6120020200012), we get a palindrome (27120222202172).

The spelling of 21000202002160 in words is "twenty-one trillion, two hundred two million, two thousand, one hundred sixty".