13212222431231 has 16 divisors (see below), whose sum is σ = 14010909292800. Its totient is φ = 12436840953600.

The previous prime is 13212222431227. The next prime is 13212222431237. The reversal of 13212222431231 is 13213422221231.

It is a cyclic number.

It is not a de Polignac number, because 13212222431231 - 2² = 13212222431227 is a prime.

It is a super-2 number, since 2×13212222431231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 13212222431194 and 13212222431203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212222431237) 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, 2150060 + ... + 5572001.

It is an arithmetic number, because the mean of its divisors is an integer number (875681830800).

Almost surely, 2^{13212222431231} is an apocalyptic number.

13212222431231 is a deficient number, since it is larger than the sum of its proper divisors (798686861569).

13212222431231 is a wasteful number, since it uses less digits than its factorization.

13212222431231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7723570.

The product of its digits is 6912, while the sum is 29.

Adding to 13212222431231 its reverse (13213422221231), we get a palindrome (26425644652462).

The spelling of 13212222431231 in words is "thirteen trillion, two hundred twelve billion, two hundred twenty-two million, four hundred thirty-one thousand, two hundred thirty-one".