202131021100 has 72 divisors (see below), whose sum is σ = 440026711488. Its totient is φ = 80594280000.

The previous prime is 202131021097. The next prime is 202131021101. The reversal of 202131021100 is 1120131202.

It is not an unprimeable number, because it can be changed into a prime (202131021101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89794975 + ... + 89797225.

It is an arithmetic number, because the mean of its divisors is an integer number (6111482104).

Almost surely, 2^202131021100 is an apocalyptic number.

202131021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202131021100 is an abundant number, since it is smaller than the sum of its proper divisors (237895690388).

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

202131021100 is a wasteful number, since it uses less digits than its factorization.

202131021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735 (or 4728 counting only the distinct ones).

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

Adding to 202131021100 its reverse (1120131202), we get a palindrome (203251152302).

The spelling of 202131021100 in words is "two hundred two billion, one hundred thirty-one million, twenty-one thousand, one hundred".