13222432621 has 2 divisors, whose sum is σ = 13222432622. Its totient is φ = 13222432620.

The previous prime is 13222432603. The next prime is 13222432627. The reversal of 13222432621 is 12623422231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11627308900 + 1595123721 = 107830^2 + 39939^2 .

It is a cyclic number.

It is not a de Polignac number, because 13222432621 - 2¹⁷ = 13222301549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13222432621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13222432627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611216310 + 6611216311.

It is an arithmetic number, because the mean of its divisors is an integer number (6611216311).

Almost surely, 2^13222432621 is an apocalyptic number.

It is an amenable number.

13222432621 is a deficient number, since it is larger than the sum of its proper divisors (1).

13222432621 is an equidigital number, since it uses as much as digits as its factorization.

13222432621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

Adding to 13222432621 its reverse (12623422231), we get a palindrome (25845854852).

The spelling of 13222432621 in words is "thirteen billion, two hundred twenty-two million, four hundred thirty-two thousand, six hundred twenty-one".