222308217 has 24 divisors (see below), whose sum is σ = 327687360. Its totient is φ = 145190880.

The previous prime is 222308213. The next prime is 222308221. The reversal of 222308217 is 712803222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222308213) and next prime (222308221).

It is not a de Polignac number, because 222308217 - 2² = 222308213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222308213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167884 + ... + 169202.

It is an arithmetic number, because the mean of its divisors is an integer number (13653640).

Almost surely, 2^222308217 is an apocalyptic number.

It is an amenable number.

222308217 is a deficient number, since it is larger than the sum of its proper divisors (105379143).

222308217 is a wasteful number, since it uses less digits than its factorization.

222308217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 222308217 is about 14910.0039235407. The cubic root of 222308217 is about 605.7849856420.

The spelling of 222308217 in words is "two hundred twenty-two million, three hundred eight thousand, two hundred seventeen".