1222205672 has 32 divisors (see below), whose sum is σ = 2366755200. Its totient is φ = 591364224.

The previous prime is 1222205657. The next prime is 1222205683. The reversal of 1222205672 is 2765022221.

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 7 ways as a sum of consecutive naturals, for example, 15203 + ... + 51725.

It is an arithmetic number, because the mean of its divisors is an integer number (73961100).

Almost surely, 2^1222205672 is an apocalyptic number.

It is an amenable number.

1222205672 is a deficient number, since it is larger than the sum of its proper divisors (1144549528).

1222205672 is a wasteful number, since it uses less digits than its factorization.

1222205672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36665 (or 36661 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1222205672 is about 34960.0582379378. The cubic root of 1222205672 is about 1069.1732840308.

Adding to 1222205672 its reverse (2765022221), we get a palindrome (3987227893).

The spelling of 1222205672 in words is "one billion, two hundred twenty-two million, two hundred five thousand, six hundred seventy-two".