21023231222010 has 32 divisors (see below), whose sum is σ = 53111320983360. Its totient is φ = 5311132098048.

The previous prime is 21023231222003. The next prime is 21023231222051. The reversal of 21023231222010 is 1022213232012.

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, 18441430327 + ... + 18441431466.

It is an arithmetic number, because the mean of its divisors is an integer number (1659728780730).

Almost surely, 2^{21023231222010} is an apocalyptic number.

21023231222010 is an abundant number, since it is smaller than the sum of its proper divisors (32088089761350).

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

21023231222010 is a wasteful number, since it uses less digits than its factorization.

21023231222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36882861822.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21023231222010 its reverse (1022213232012), we get a palindrome (22045444454022).

The spelling of 21023231222010 in words is "twenty-one trillion, twenty-three billion, two hundred thirty-one million, two hundred twenty-two thousand, ten".