1222218594 has 24 divisors (see below), whose sum is σ = 2654301312. Its totient is φ = 406458360.

The previous prime is 1222218581. The next prime is 1222218611. The reversal of 1222218594 is 4958122221.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71014 + ... + 86529.

It is an arithmetic number, because the mean of its divisors is an integer number (110595888).

Almost surely, 2^1222218594 is an apocalyptic number.

1222218594 is an abundant number, since it is smaller than the sum of its proper divisors (1432082718).

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

1222218594 is a wasteful number, since it uses less digits than its factorization.

1222218594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157982 (or 157979 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1222218594 is about 34960.2430483542. The cubic root of 1222218594 is about 1069.1770520296.

The spelling of 1222218594 in words is "one billion, two hundred twenty-two million, two hundred eighteen thousand, five hundred ninety-four".