222222160 has 40 divisors (see below), whose sum is σ = 517366440. Its totient is φ = 88768512.

The previous prime is 222222149. The next prime is 222222193. The reversal of 222222160 is 61222222.

It can be written as a sum of positive squares in 4 ways, for example, as 47665216 + 174556944 = 6904^2 + 13212^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79344 + ... + 82096.

It is an arithmetic number, because the mean of its divisors is an integer number (12934161).

Almost surely, 2^222222160 is an apocalyptic number.

222222160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222222160 is an abundant number, since it is smaller than the sum of its proper divisors (295144280).

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

222222160 is a wasteful number, since it uses less digits than its factorization.

222222160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775 (or 3769 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 222222160 is about 14907.1177630017. The cubic root of 222222160 is about 605.7068077447.

Adding to 222222160 its reverse (61222222), we get a palindrome (283444382).

The spelling of 222222160 in words is "two hundred twenty-two million, two hundred twenty-two thousand, one hundred sixty".