13221222212231 has 4 divisors (see below), whose sum is σ = 14423151504264. Its totient is φ = 12019292920200.

The previous prime is 13221222212213. The next prime is 13221222212291.

13221222212231 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13221222212231 - 2³⁸ = 12946344305287 is a prime.

It is a super-2 number, since 2×13221222212231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13221222212231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221222212291) 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 3 ways as a sum of consecutive naturals, for example, 600964646000 + ... + 600964646021.

It is an arithmetic number, because the mean of its divisors is an integer number (3605787876066).

Almost surely, 2^{13221222212231} is an apocalyptic number.

13221222212231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13221222212231 is a deficient number, since it is larger than the sum of its proper divisors (1201929292033).

13221222212231 is a wasteful number, since it uses less digits than its factorization.

13221222212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201929292032.

The product of its digits is 2304, while the sum is 26.

It can be divided in two parts, 1322122 and 2212231, that added together give a palindrome (3534353).

The spelling of 13221222212231 in words is "thirteen trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred thirty-one".