222262217 has 2 divisors, whose sum is σ = 222262218. Its totient is φ = 222262216.

The previous prime is 222262193. The next prime is 222262237. The reversal of 222262217 is 712262222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221087161 + 1175056 = 14869^2 + 1084^2 .

It is a cyclic number.

It is not a de Polignac number, because 222262217 - 2¹² = 222258121 is a prime.

It is not a weakly prime, because it can be changed into another prime (222262237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111131108 + 111131109.

It is an arithmetic number, because the mean of its divisors is an integer number (111131109).

Almost surely, 2^222262217 is an apocalyptic number.

It is an amenable number.

222262217 is a deficient number, since it is larger than the sum of its proper divisors (1).

222262217 is an equidigital number, since it uses as much as digits as its factorization.

222262217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 26.

The square root of 222262217 is about 14908.4612552738. The cubic root of 222262217 is about 605.7431997648.

The spelling of 222262217 in words is "two hundred twenty-two million, two hundred sixty-two thousand, two hundred seventeen".