22241309 has 2 divisors, whose sum is σ = 22241310. Its totient is φ = 22241308.

The previous prime is 22241281. The next prime is 22241327. The reversal of 22241309 is 90314222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 1493284 = 4555^2 + 1222^2 .

It is a cyclic number.

It is not a de Polignac number, because 22241309 - 2¹² = 22237213 is a prime.

It is a Sophie Germain 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 (22241339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11120654 + 11120655.

It is an arithmetic number, because the mean of its divisors is an integer number (11120655).

Almost surely, 2^22241309 is an apocalyptic number.

It is an amenable number.

22241309 is a deficient number, since it is larger than the sum of its proper divisors (1).

22241309 is an equidigital number, since it uses as much as digits as its factorization.

22241309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 22241309 is about 4716.0692318922. The cubic root of 22241309 is about 281.2246907925.

The spelling of 22241309 in words is "twenty-two million, two hundred forty-one thousand, three hundred nine".