22902705421 has 2 divisors, whose sum is σ = 22902705422. Its totient is φ = 22902705420.

The previous prime is 22902705403. The next prime is 22902705437. The reversal of 22902705421 is 12450720922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22324543396 + 578162025 = 149414^2 + 24045^2 .

It is a cyclic number.

It is not a de Polignac number, because 22902705421 - 2²⁹ = 22365834509 is a prime.

It is a super-2 number, since 2×22902705421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22902700421) 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 as a sum of consecutive naturals, namely, 11451352710 + 11451352711.

It is an arithmetic number, because the mean of its divisors is an integer number (11451352711).

Almost surely, 2^22902705421 is an apocalyptic number.

It is an amenable number.

22902705421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22902705421 is an equidigital number, since it uses as much as digits as its factorization.

22902705421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 22902705421 in words is "twenty-two billion, nine hundred two million, seven hundred five thousand, four hundred twenty-one".