13221133331 has 16 divisors (see below), whose sum is σ = 15508086528. Its totient is φ = 11035332000.

The previous prime is 13221133327. The next prime is 13221133333. The reversal of 13221133331 is 13333112231.

It is not a de Polignac number, because 13221133331 - 2² = 13221133327 is a prime.

It is a super-2 number, since 2×13221133331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13221133297 and 13221133306.

It is not an unprimeable number, because it can be changed into a prime (13221133333) 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, 33281 + ... + 165981.

It is an arithmetic number, because the mean of its divisors is an integer number (969255408).

Almost surely, 2^13221133331 is an apocalyptic number.

13221133331 is a deficient number, since it is larger than the sum of its proper divisors (2286953197).

13221133331 is a wasteful number, since it uses less digits than its factorization.

13221133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133082.

The product of its digits is 972, while the sum is 23.

Adding to 13221133331 its reverse (13333112231), we get a palindrome (26554245562).

The spelling of 13221133331 in words is "thirteen billion, two hundred twenty-one million, one hundred thirty-three thousand, three hundred thirty-one".