202131131013021 has 64 divisors (see below), whose sum is σ = 326085146449920. Its totient is φ = 108912159256320.

The previous prime is 202131131013001. The next prime is 202131131013083. The reversal of 202131131013021 is 120310131131202.

It is not a de Polignac number, because 202131131013021 - 2⁶ = 202131131012957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202131131013001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191450451 + ... + 192503343.

It is an arithmetic number, because the mean of its divisors is an integer number (5095080413280).

Almost surely, 2^{202131131013021} is an apocalyptic number.

202131131013021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202131131013021 is a deficient number, since it is larger than the sum of its proper divisors (123954015436899).

202131131013021 is a wasteful number, since it uses less digits than its factorization.

202131131013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060306.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 202131131013021 its reverse (120310131131202), we get a palindrome (322441262144223).

The spelling of 202131131013021 in words is "two hundred two trillion, one hundred thirty-one billion, one hundred thirty-one million, thirteen thousand, twenty-one".