13221212032 has 32 divisors (see below), whose sum is σ = 30101868720. Its totient is φ = 5666233344.

The previous prime is 13221212029. The next prime is 13221212057. The reversal of 13221212032 is 23021212231.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7377013 + ... + 7378804.

Almost surely, 2^13221212032 is an apocalyptic number.

It is an amenable number.

13221212032 is an abundant number, since it is smaller than the sum of its proper divisors (16880656688).

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

13221212032 is an equidigital number, since it uses as much as digits as its factorization.

13221212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14755838 (or 14755826 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13221212032 its reverse (23021212231), we get a palindrome (36242424263).

The spelling of 13221212032 in words is "thirteen billion, two hundred twenty-one million, two hundred twelve thousand, thirty-two".