22201052221 has 2 divisors, whose sum is σ = 22201052222. Its totient is φ = 22201052220.

The previous prime is 22201052173. The next prime is 22201052249. The reversal of 22201052221 is 12225010222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21899856196 + 301196025 = 147986^2 + 17355^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201052221 - 2²⁵ = 22167497789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22201052261) 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, 11100526110 + 11100526111.

It is an arithmetic number, because the mean of its divisors is an integer number (11100526111).

Almost surely, 2^22201052221 is an apocalyptic number.

It is an amenable number.

22201052221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201052221 is an equidigital number, since it uses as much as digits as its factorization.

22201052221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 22201052221 its reverse (12225010222), we get a palindrome (34426062443).

The spelling of 22201052221 in words is "twenty-two billion, two hundred one million, fifty-two thousand, two hundred twenty-one".