1222075866 has 16 divisors (see below), whose sum is σ = 2666347488. Its totient is φ = 370326000.

The previous prime is 1222075847. The next prime is 1222075871. The reversal of 1222075866 is 6685702221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9258085 + ... + 9258216.

It is an arithmetic number, because the mean of its divisors is an integer number (166646718).

Almost surely, 2^1222075866 is an apocalyptic number.

1222075866 is an abundant number, since it is smaller than the sum of its proper divisors (1444271622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222075866 is a wasteful number, since it uses less digits than its factorization.

1222075866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18516317.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 1222075866 is about 34958.2016986000. The cubic root of 1222075866 is about 1069.1354316944.

The spelling of 1222075866 in words is "one billion, two hundred twenty-two million, seventy-five thousand, eight hundred sixty-six".