21210313112232 has 64 divisors (see below), whose sum is σ = 55271731782720. Its totient is φ = 6776348502528.

The previous prime is 21210313112189. The next prime is 21210313112239. The reversal of 21210313112232 is 23221131301212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (21210313112239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178190413 + ... + 178309404.

It is an arithmetic number, because the mean of its divisors is an integer number (863620809105).

Almost surely, 2^{21210313112232} is an apocalyptic number.

It is an amenable number.

21210313112232 is an abundant number, since it is smaller than the sum of its proper divisors (34061418670488).

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

21210313112232 is a wasteful number, since it uses less digits than its factorization.

21210313112232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356499930 (or 356499926 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21210313112232 its reverse (23221131301212), we get a palindrome (44431444413444).

The spelling of 21210313112232 in words is "twenty-one trillion, two hundred ten billion, three hundred thirteen million, one hundred twelve thousand, two hundred thirty-two".