13321022213231 has 4 divisors (see below), whose sum is σ = 13321165763472. Its totient is φ = 13320878662992.

The previous prime is 13321022213209. The next prime is 13321022213351. The reversal of 13321022213231 is 13231222012331.

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 13321022213231 - 2¹⁰ = 13321022212207 is a prime.

It is a super-2 number, since 2×13321022213231² (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 13321022213231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321022213531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71635835 + ... + 71821548.

It is an arithmetic number, because the mean of its divisors is an integer number (3330291440868).

Almost surely, 2^{13321022213231} is an apocalyptic number.

13321022213231 is a deficient number, since it is larger than the sum of its proper divisors (143550241).

13321022213231 is an equidigital number, since it uses as much as digits as its factorization.

13321022213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143550240.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 13321022213231 its reverse (13231222012331), we get a palindrome (26552244225562).

The spelling of 13321022213231 in words is "thirteen trillion, three hundred twenty-one billion, twenty-two million, two hundred thirteen thousand, two hundred thirty-one".