222218547640 has 32 divisors (see below), whose sum is σ = 504942154560. Its totient is φ = 88007344000.

The previous prime is 222218547623. The next prime is 222218547721. The reversal of 222218547640 is 46745812222.

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, 27498256 + ... + 27506335.

It is an arithmetic number, because the mean of its divisors is an integer number (15779442330).

Almost surely, 2^222218547640 is an apocalyptic number.

222218547640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222218547640 is an abundant number, since it is smaller than the sum of its proper divisors (282723606920).

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

222218547640 is a wasteful number, since it uses less digits than its factorization.

222218547640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55004703 (or 55004699 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 222218547640 in words is "two hundred twenty-two billion, two hundred eighteen million, five hundred forty-seven thousand, six hundred forty".