222218252 has 6 divisors (see below), whose sum is σ = 388881948. Its totient is φ = 111109124.

The previous prime is 222218233. The next prime is 222218257. The reversal of 222218252 is 252812222.

It is not an unprimeable number, because it can be changed into a prime (222218257) 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 as a sum of consecutive naturals, namely, 27777278 + ... + 27777285.

It is an arithmetic number, because the mean of its divisors is an integer number (64813658).

Almost surely, 2^222218252 is an apocalyptic number.

It is an amenable number.

222218252 is a deficient number, since it is larger than the sum of its proper divisors (166663696).

222218252 is a wasteful number, since it uses less digits than its factorization.

222218252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55554567 (or 55554565 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 222218252 is about 14906.9866841022. The cubic root of 222218252 is about 605.7032570696.

The spelling of 222218252 in words is "two hundred twenty-two million, two hundred eighteen thousand, two hundred fifty-two".