222422660 has 24 divisors (see below), whose sum is σ = 477951936. Its totient is φ = 86899680.

The previous prime is 222422579. The next prime is 222422671. The reversal of 222422660 is 66224222.

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, 128456 + ... + 130175.

It is an arithmetic number, because the mean of its divisors is an integer number (19914664).

Almost surely, 2^222422660 is an apocalyptic number.

222422660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222422660 is an abundant number, since it is smaller than the sum of its proper divisors (255529276).

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

222422660 is a wasteful number, since it uses less digits than its factorization.

222422660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258683 (or 258681 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 222422660 is about 14913.8412221667. The cubic root of 222422660 is about 605.8889193591. Note that the first 3 decimals are identical.

Adding to 222422660 its reverse (66224222), we get a palindrome (288646882).

The spelling of 222422660 in words is "two hundred twenty-two million, four hundred twenty-two thousand, six hundred sixty".