22249560402721 has 2 divisors, whose sum is σ = 22249560402722. Its totient is φ = 22249560402720.

The previous prime is 22249560402689. The next prime is 22249560402781. The reversal of 22249560402721 is 12720406594222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20869922226321 + 1379638176400 = 4568361^2 + 1174580^2 .

It is a cyclic number.

It is not a de Polignac number, because 22249560402721 - 2⁵ = 22249560402689 is a prime.

It is a super-2 number, since 2×22249560402721² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22249560402781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11124780201360 + 11124780201361.

It is an arithmetic number, because the mean of its divisors is an integer number (11124780201361).

Almost surely, 2^{22249560402721} is an apocalyptic number.

It is an amenable number.

22249560402721 is a deficient number, since it is larger than the sum of its proper divisors (1).

22249560402721 is an equidigital number, since it uses as much as digits as its factorization.

22249560402721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 46.

Adding to 22249560402721 its reverse (12720406594222), we get a palindrome (34969966996943).

The spelling of 22249560402721 in words is "twenty-two trillion, two hundred forty-nine billion, five hundred sixty million, four hundred two thousand, seven hundred twenty-one".