22340404621 has 2 divisors, whose sum is σ = 22340404622. Its totient is φ = 22340404620.

The previous prime is 22340404613. The next prime is 22340404627. The reversal of 22340404621 is 12640404322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11974924900 + 10365479721 = 109430^2 + 101811^2 .

It is a cyclic number.

It is not a de Polignac number, because 22340404621 - 2³ = 22340404613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22340404621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22340404627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11170202310 + 11170202311.

It is an arithmetic number, because the mean of its divisors is an integer number (11170202311).

Almost surely, 2^22340404621 is an apocalyptic number.

It is an amenable number.

22340404621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22340404621 is an equidigital number, since it uses as much as digits as its factorization.

22340404621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 22340404621 its reverse (12640404322), we get a palindrome (34980808943).

The spelling of 22340404621 in words is "twenty-two billion, three hundred forty million, four hundred four thousand, six hundred twenty-one".