13212230444 has 36 divisors (see below), whose sum is σ = 26927003376. Its totient is φ = 5655926304.

The previous prime is 13212230441. The next prime is 13212230467. The reversal of 13212230444 is 44403221231.

It is not an unprimeable number, because it can be changed into a prime (13212230441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135854 + ... + 211850.

It is an arithmetic number, because the mean of its divisors is an integer number (747972316).

Almost surely, 2^13212230444 is an apocalyptic number.

13212230444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13212230444 is an abundant number, since it is smaller than the sum of its proper divisors (13714772932).

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

13212230444 is a wasteful number, since it uses less digits than its factorization.

13212230444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76902 (or 76893 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 13212230444 its reverse (44403221231), we get a palindrome (57615451675).

The spelling of 13212230444 in words is "thirteen billion, two hundred twelve million, two hundred thirty thousand, four hundred forty-four".