222122312018 has 16 divisors (see below), whose sum is σ = 352802720664. Its totient is φ = 104522154240.

The previous prime is 222122312017. The next prime is 222122312029. The reversal of 222122312018 is 810213221222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 171426637369 + 50695674649 = 414037^2 + 225157^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222122312017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445496 + ... + 801692.

Almost surely, 2^222122312018 is an apocalyptic number.

222122312018 is a deficient number, since it is larger than the sum of its proper divisors (130680408646).

222122312018 is a wasteful number, since it uses less digits than its factorization.

222122312018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374557.

The product of its (nonzero) digits is 1536, while the sum is 26.

The spelling of 222122312018 in words is "two hundred twenty-two billion, one hundred twenty-two million, three hundred twelve thousand, eighteen".