22366217 has 2 divisors, whose sum is σ = 22366218. Its totient is φ = 22366216.

The previous prime is 22366213. The next prime is 22366247. The reversal of 22366217 is 71266322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18139081 + 4227136 = 4259^2 + 2056^2 .

It is a cyclic number.

It is not a de Polignac number, because 22366217 - 2² = 22366213 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22366217.

It is not a weakly prime, because it can be changed into another prime (22366213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11183108 + 11183109.

It is an arithmetic number, because the mean of its divisors is an integer number (11183109).

Almost surely, 2^22366217 is an apocalyptic number.

It is an amenable number.

22366217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22366217 is an equidigital number, since it uses as much as digits as its factorization.

22366217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 22366217 is about 4729.2934990334. The cubic root of 22366217 is about 281.7501643533.

The spelling of 22366217 in words is "twenty-two million, three hundred sixty-six thousand, two hundred seventeen".