1222653218 has 16 divisors (see below), whose sum is σ = 1853184960. Its totient is φ = 604939536.

The previous prime is 1222653181. The next prime is 1222653227. The reversal of 1222653218 is 8123562221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190205 + ... + 196527.

It is an arithmetic number, because the mean of its divisors is an integer number (115824060).

Almost surely, 2^1222653218 is an apocalyptic number.

1222653218 is a deficient number, since it is larger than the sum of its proper divisors (630531742).

1222653218 is a wasteful number, since it uses less digits than its factorization.

1222653218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7321.

The product of its digits is 11520, while the sum is 32.

The square root of 1222653218 is about 34966.4584709404. The cubic root of 1222653218 is about 1069.3037710248.

The spelling of 1222653218 in words is "one billion, two hundred twenty-two million, six hundred fifty-three thousand, two hundred eighteen".