21131301202000 has 160 divisors (see below), whose sum is σ = 56315180847744. Its totient is φ = 7604891136000.

The previous prime is 21131301201947. The next prime is 21131301202001. The reversal of 21131301202000 is 20210313112.

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 (21131301202001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2817102 + ... + 7085101.

Almost surely, 2^{21131301202000} is an apocalyptic number.

21131301202000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21131301202000 is an abundant number, since it is smaller than the sum of its proper divisors (35183879645744).

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

21131301202000 is a wasteful number, since it uses less digits than its factorization.

21131301202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9902334 (or 9902318 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21131301202000 its reverse (20210313112), we get a palindrome (21151511515112).

The spelling of 21131301202000 in words is "twenty-one trillion, one hundred thirty-one billion, three hundred one million, two hundred two thousand".