222646223 has 2 divisors, whose sum is σ = 222646224. Its totient is φ = 222646222.

The previous prime is 222646219. The next prime is 222646243. The reversal of 222646223 is 322646222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222646223 - 2² = 222646219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222646213) 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, 111323111 + 111323112.

It is an arithmetic number, because the mean of its divisors is an integer number (111323112).

Almost surely, 2^222646223 is an apocalyptic number.

222646223 is a deficient number, since it is larger than the sum of its proper divisors (1).

222646223 is an equidigital number, since it uses as much as digits as its factorization.

222646223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 29.

The square root of 222646223 is about 14921.3344912578. The cubic root of 222646223 is about 606.0918498022.

Subtracting 222646223 from its reverse (322646222), we obtain a palindrome (99999999).

The spelling of 222646223 in words is "two hundred twenty-two million, six hundred forty-six thousand, two hundred twenty-three".