22660213 has 2 divisors, whose sum is σ = 22660214. Its totient is φ = 22660212.

The previous prime is 22660199. The next prime is 22660247. The reversal of 22660213 is 31206622.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22259524 + 400689 = 4718^2 + 633^2 .

It is a cyclic number.

It is not a de Polignac number, because 22660213 - 2⁵ = 22660181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22660273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11330106 + 11330107.

It is an arithmetic number, because the mean of its divisors is an integer number (11330107).

Almost surely, 2^22660213 is an apocalyptic number.

It is an amenable number.

22660213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22660213 is an equidigital number, since it uses as much as digits as its factorization.

22660213 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 22.

The square root of 22660213 is about 4760.2744668769. The cubic root of 22660213 is about 282.9792965164.

Adding to 22660213 its reverse (31206622), we get a palindrome (53866835).

The spelling of 22660213 in words is "twenty-two million, six hundred sixty thousand, two hundred thirteen".