1222199965 has 32 divisors (see below), whose sum is σ = 1743388416. Its totient is φ = 805109760.

The previous prime is 1222199939. The next prime is 1222199999. The reversal of 1222199965 is 5699912221.

It is not a de Polignac number, because 1222199965 - 2⁷ = 1222199837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85149 + ... + 98461.

It is an arithmetic number, because the mean of its divisors is an integer number (54480888).

Almost surely, 2^1222199965 is an apocalyptic number.

It is an amenable number.

1222199965 is a deficient number, since it is larger than the sum of its proper divisors (521188451).

1222199965 is a wasteful number, since it uses less digits than its factorization.

1222199965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13429.

The product of its digits is 174960, while the sum is 46.

The square root of 1222199965 is about 34959.9766161249. The cubic root of 1222199965 is about 1069.1716198861.

The spelling of 1222199965 in words is "one billion, two hundred twenty-two million, one hundred ninety-nine thousand, nine hundred sixty-five".