1222622618 has 24 divisors (see below), whose sum is σ = 2134605312. Its totient is φ = 523673304.

The previous prime is 1222622617. The next prime is 1222622647. The reversal of 1222622618 is 8162262221.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222622617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261005 + ... + 265647.

It is an arithmetic number, because the mean of its divisors is an integer number (88941888).

Almost surely, 2^1222622618 is an apocalyptic number.

1222622618 is a deficient number, since it is larger than the sum of its proper divisors (911982694).

1222622618 is a wasteful number, since it uses less digits than its factorization.

1222622618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7346 (or 7339 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1222622618 is about 34966.0209060167. The cubic root of 1222622618 is about 1069.2948502701.

Adding to 1222622618 its reverse (8162262221), we get a palindrome (9384884839).

The spelling of 1222622618 in words is "one billion, two hundred twenty-two million, six hundred twenty-two thousand, six hundred eighteen".