1222457884 has 12 divisors (see below), whose sum is σ = 2139858000. Its totient is φ = 611069888.

The previous prime is 1222457881. The next prime is 1222457893. The reversal of 1222457884 is 4887542221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222457884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222457881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21544 + ... + 53935.

It is an arithmetic number, because the mean of its divisors is an integer number (178321500).

Almost surely, 2^1222457884 is an apocalyptic number.

It is an amenable number.

1222457884 is a deficient number, since it is larger than the sum of its proper divisors (917400116).

1222457884 is a wasteful number, since it uses less digits than its factorization.

1222457884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79532 (or 79530 counting only the distinct ones).

The product of its digits is 286720, while the sum is 43.

The square root of 1222457884 is about 34963.6651968869. The cubic root of 1222457884 is about 1069.2468231500.

The spelling of 1222457884 in words is "one billion, two hundred twenty-two million, four hundred fifty-seven thousand, eight hundred eighty-four".