13220412231 has 16 divisors (see below), whose sum is σ = 19026032256. Its totient is φ = 8117262816.

The previous prime is 13220412229. The next prime is 13220412281. The reversal of 13220412231 is 13221402231.

It is not a de Polignac number, because 13220412231 - 2¹ = 13220412229 is a prime.

It is a super-2 number, since 2×13220412231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13220412198 and 13220412207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220412281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365325 + ... + 399878.

It is an arithmetic number, because the mean of its divisors is an integer number (1189127016).

Almost surely, 2^13220412231 is an apocalyptic number.

13220412231 is a deficient number, since it is larger than the sum of its proper divisors (5805620025).

13220412231 is a wasteful number, since it uses less digits than its factorization.

13220412231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765662.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 13220412231 its reverse (13221402231), we get a palindrome (26441814462).

The spelling of 13220412231 in words is "thirteen billion, two hundred twenty million, four hundred twelve thousand, two hundred thirty-one".