13221121032 has 48 divisors (see below), whose sum is σ = 40922519040. Its totient is φ = 3777463008.

The previous prime is 13221121013. The next prime is 13221121057. The reversal of 13221121032 is 23012112231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13221120996 and 13221121014.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13115688 + ... + 13116695.

It is an arithmetic number, because the mean of its divisors is an integer number (852552480).

Almost surely, 2^13221121032 is an apocalyptic number.

13221121032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13221121032 is an abundant number, since it is smaller than the sum of its proper divisors (27701398008).

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

13221121032 is a wasteful number, since it uses less digits than its factorization.

13221121032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26232402 (or 26232395 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13221121032 its reverse (23012112231), we get a palindrome (36233233263).

The spelling of 13221121032 in words is "thirteen billion, two hundred twenty-one million, one hundred twenty-one thousand, thirty-two".