13331221232 has 20 divisors (see below), whose sum is σ = 29519132976. Its totient is φ = 5713380480.

The previous prime is 13331221229. The next prime is 13331221247. The reversal of 13331221232 is 23212213331.

It is a junction number, because it is equal to n+sod(n) for n = 13331221198 and 13331221207.

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, 59514269 + ... + 59514492.

Almost surely, 2^13331221232 is an apocalyptic number.

It is an amenable number.

13331221232 is an abundant number, since it is smaller than the sum of its proper divisors (16187911744).

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

13331221232 is a wasteful number, since it uses less digits than its factorization.

13331221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119028776 (or 119028770 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

Adding to 13331221232 its reverse (23212213331), we get a palindrome (36543434563).

The spelling of 13331221232 in words is "thirteen billion, three hundred thirty-one million, two hundred twenty-one thousand, two hundred thirty-two".