1222218352 has 20 divisors (see below), whose sum is σ = 2369145240. Its totient is φ = 610826048.

The previous prime is 1222218251. The next prime is 1222218379. The reversal of 1222218352 is 2538122221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222218352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20403 + ... + 53485.

It is an arithmetic number, because the mean of its divisors is an integer number (118457262).

Almost surely, 2^1222218352 is an apocalyptic number.

It is an amenable number.

1222218352 is a deficient number, since it is larger than the sum of its proper divisors (1146926888).

1222218352 is a wasteful number, since it uses less digits than its factorization.

1222218352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35400 (or 35394 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 1222218352 is about 34960.2395872797. The cubic root of 1222218352 is about 1069.1769814637.

The spelling of 1222218352 in words is "one billion, two hundred twenty-two million, two hundred eighteen thousand, three hundred fifty-two".