13221131131 has 16 divisors (see below), whose sum is σ = 14703152128. Its totient is φ = 11805847200.

The previous prime is 13221131093. The next prime is 13221131141. The reversal of 13221131131 is 13113112231.

13221131131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13221131131 - 2⁷ = 13221131003 is a prime.

It is a super-2 number, since 2×13221131131² (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 = 13221131099 and 13221131108.

It is not an unprimeable number, because it can be changed into a prime (13221131141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1434520 + ... + 1443706.

It is an arithmetic number, because the mean of its divisors is an integer number (918947008).

Almost surely, 2^13221131131 is an apocalyptic number.

13221131131 is a deficient number, since it is larger than the sum of its proper divisors (1482020997).

13221131131 is a wasteful number, since it uses less digits than its factorization.

13221131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12802.

The product of its digits is 108, while the sum is 19.

Adding to 13221131131 its reverse (13113112231), we get a palindrome (26334243362).

The spelling of 13221131131 in words is "thirteen billion, two hundred twenty-one million, one hundred thirty-one thousand, one hundred thirty-one".