222266717 has 2 divisors, whose sum is σ = 222266718. Its totient is φ = 222266716.

The previous prime is 222266689. The next prime is 222266719. The reversal of 222266717 is 717662222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184579396 + 37687321 = 13586^2 + 6139^2 .

It is a cyclic number.

It is not a de Polignac number, because 222266717 - 2²⁰ = 221218141 is a prime.

It is a super-5 number, since 5×222266717⁵ (a number of 43 digits) contains 55555 as substring.

Together with 222266719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222266719) 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, 111133358 + 111133359.

It is an arithmetic number, because the mean of its divisors is an integer number (111133359).

Almost surely, 2^222266717 is an apocalyptic number.

It is an amenable number.

222266717 is a deficient number, since it is larger than the sum of its proper divisors (1).

222266717 is an equidigital number, since it uses as much as digits as its factorization.

222266717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 35.

The square root of 222266717 is about 14908.6121755179. The cubic root of 222266717 is about 605.7472877680.

The spelling of 222266717 in words is "two hundred twenty-two million, two hundred sixty-six thousand, seven hundred seventeen".