22935221 has 2 divisors, whose sum is σ = 22935222. Its totient is φ = 22935220.

The previous prime is 22935197. The next prime is 22935251. The reversal of 22935221 is 12253922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18879025 + 4056196 = 4345^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 22935221 - 2¹⁴ = 22918837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22935251) 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, 11467610 + 11467611.

It is an arithmetic number, because the mean of its divisors is an integer number (11467611).

Almost surely, 2^22935221 is an apocalyptic number.

It is an amenable number.

22935221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22935221 is an equidigital number, since it uses as much as digits as its factorization.

22935221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 22935221 is about 4789.0730835935. The cubic root of 22935221 is about 284.1194572845.

The spelling of 22935221 in words is "twenty-two million, nine hundred thirty-five thousand, two hundred twenty-one".