222226657 has 2 divisors, whose sum is σ = 222226658. Its totient is φ = 222226656.

The previous prime is 222226651. The next prime is 222226691. The reversal of 222226657 is 756622222.

It is an a-pointer prime, because the next prime (222226691) can be obtained adding 222226657 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128504896 + 93721761 = 11336^2 + 9681^2 .

It is a cyclic number.

It is not a de Polignac number, because 222226657 - 2²⁷ = 88008929 is a prime.

It is not a weakly prime, because it can be changed into another prime (222226651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111113328 + 111113329.

It is an arithmetic number, because the mean of its divisors is an integer number (111113329).

Almost surely, 2^222226657 is an apocalyptic number.

It is an amenable number.

222226657 is a deficient number, since it is larger than the sum of its proper divisors (1).

222226657 is an equidigital number, since it uses as much as digits as its factorization.

222226657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 222226657 is about 14907.2685962251. The cubic root of 222226657 is about 605.7108935136.

Adding to 222226657 its reverse (756622222), we get a palindrome (978848879).

The spelling of 222226657 in words is "two hundred twenty-two million, two hundred twenty-six thousand, six hundred fifty-seven".