97222218 has 32 divisors (see below), whose sum is σ = 206369856. Its totient is φ = 30428928.

The previous prime is 97222189. The next prime is 97222241. The reversal of 97222218 is 81222279.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56580 + ... + 58272.

It is an arithmetic number, because the mean of its divisors is an integer number (6449058).

Almost surely, 2^97222218 is an apocalyptic number.

97222218 is an abundant number, since it is smaller than the sum of its proper divisors (109147638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97222218 is a wasteful number, since it uses less digits than its factorization.

97222218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278.

The product of its digits is 8064, while the sum is 33.

The square root of 97222218 is about 9860.1327577269. The cubic root of 97222218 is about 459.8206894071.

It can be divided in two parts, 9 and 7222218, that added together give a palindrome (7222227).

The spelling of 97222218 in words is "ninety-seven million, two hundred twenty-two thousand, two hundred eighteen".