22352162621 has 2 divisors, whose sum is σ = 22352162622. Its totient is φ = 22352162620.

The previous prime is 22352162563. The next prime is 22352162629. The reversal of 22352162621 is 12626125322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21626937721 + 725224900 = 147061^2 + 26930^2 .

It is a cyclic number.

It is not a de Polignac number, because 22352162621 - 2⁶ = 22352162557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22352162629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11176081310 + 11176081311.

It is an arithmetic number, because the mean of its divisors is an integer number (11176081311).

Almost surely, 2^22352162621 is an apocalyptic number.

It is an amenable number.

22352162621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22352162621 is an equidigital number, since it uses as much as digits as its factorization.

22352162621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

Adding to 22352162621 its reverse (12626125322), we get a palindrome (34978287943).

The spelling of 22352162621 in words is "twenty-two billion, three hundred fifty-two million, one hundred sixty-two thousand, six hundred twenty-one".