21131012202230 has 32 divisors (see below), whose sum is σ = 43563397515264. Its totient is φ = 7229270686176.

The previous prime is 21131012202227. The next prime is 21131012202247. The reversal of 21131012202230 is 3220221013112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325962842 + ... + 326027661.

It is an arithmetic number, because the mean of its divisors is an integer number (1361356172352).

Almost surely, 2^{21131012202230} is an apocalyptic number.

21131012202230 is an abundant number, since it is smaller than the sum of its proper divisors (22432385313034).

21131012202230 is a wasteful number, since it uses less digits than its factorization.

21131012202230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651990980.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21131012202230 its reverse (3220221013112), we get a palindrome (24351233215342).

The spelling of 21131012202230 in words is "twenty-one trillion, one hundred thirty-one billion, twelve million, two hundred two thousand, two hundred thirty".