222318522721 has 16 divisors (see below), whose sum is σ = 234204856704. Its totient is φ = 210618105984.

The previous prime is 222318522689. The next prime is 222318522731. The reversal of 222318522721 is 127225813222.

It is a cyclic number.

It is not a de Polignac number, because 222318522721 - 2⁵ = 222318522689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222318522731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16563205 + ... + 16576621.

It is an arithmetic number, because the mean of its divisors is an integer number (14637803544).

Almost surely, 2^222318522721 is an apocalyptic number.

It is an amenable number.

222318522721 is a deficient number, since it is larger than the sum of its proper divisors (11886333983).

222318522721 is a wasteful number, since it uses less digits than its factorization.

222318522721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20280.

The product of its digits is 53760, while the sum is 37.

The spelling of 222318522721 in words is "two hundred twenty-two billion, three hundred eighteen million, five hundred twenty-two thousand, seven hundred twenty-one".