22245410021 has 2 divisors, whose sum is σ = 22245410022. Its totient is φ = 22245410020.

The previous prime is 22245409999. The next prime is 22245410023. The reversal of 22245410021 is 12001454222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15936285121 + 6309124900 = 126239^2 + 79430^2 .

It is a cyclic number.

It is not a de Polignac number, because 22245410021 - 2⁶ = 22245409957 is a prime.

Together with 22245410023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22245410023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122705010 + 11122705011.

It is an arithmetic number, because the mean of its divisors is an integer number (11122705011).

Almost surely, 2^22245410021 is an apocalyptic number.

It is an amenable number.

22245410021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22245410021 is an equidigital number, since it uses as much as digits as its factorization.

22245410021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 22245410021 its reverse (12001454222), we get a palindrome (34246864243).

The spelling of 22245410021 in words is "twenty-two billion, two hundred forty-five million, four hundred ten thousand, twenty-one".