22663229 has 2 divisors, whose sum is σ = 22663230. Its totient is φ = 22663228.

The previous prime is 22663213. The next prime is 22663237. The reversal of 22663229 is 92236622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17623204 + 5040025 = 4198^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 22663229 - 2⁴ = 22663213 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22663195 and 22663204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22663429) 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, 11331614 + 11331615.

It is an arithmetic number, because the mean of its divisors is an integer number (11331615).

Almost surely, 2^22663229 is an apocalyptic number.

It is an amenable number.

22663229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22663229 is an equidigital number, since it uses as much as digits as its factorization.

22663229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The square root of 22663229 is about 4760.5912447930. The cubic root of 22663229 is about 282.9918504980.

The spelling of 22663229 in words is "twenty-two million, six hundred sixty-three thousand, two hundred twenty-nine".