222814817 has 2 divisors, whose sum is σ = 222814818. Its totient is φ = 222814816.

The previous prime is 222814811. The next prime is 222814819. The reversal of 222814817 is 718418222.

222814817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202663696 + 20151121 = 14236^2 + 4489^2 .

It is a cyclic number.

It is not a de Polignac number, because 222814817 - 2⁸ = 222814561 is a prime.

Together with 222814819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222814811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111407408 + 111407409.

It is an arithmetic number, because the mean of its divisors is an integer number (111407409).

Almost surely, 2^222814817 is an apocalyptic number.

It is an amenable number.

222814817 is a deficient number, since it is larger than the sum of its proper divisors (1).

222814817 is an equidigital number, since it uses as much as digits as its factorization.

222814817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 35.

The square root of 222814817 is about 14926.9828498595. The cubic root of 222814817 is about 606.2447944854.

The spelling of 222814817 in words is "two hundred twenty-two million, eight hundred fourteen thousand, eight hundred seventeen".