1222855117 has 8 divisors (see below), whose sum is σ = 1334286432. Its totient is φ = 1111467600.

The previous prime is 1222855111. The next prime is 1222855121. The reversal of 1222855117 is 7115582221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222855117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222855111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81183 + ... + 95059.

It is an arithmetic number, because the mean of its divisors is an integer number (166785804).

Almost surely, 2^1222855117 is an apocalyptic number.

It is an amenable number.

1222855117 is a deficient number, since it is larger than the sum of its proper divisors (111431315).

1222855117 is a wasteful number, since it uses less digits than its factorization.

1222855117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21899.

The product of its digits is 11200, while the sum is 34.

The square root of 1222855117 is about 34969.3453899269. The cubic root of 1222855117 is about 1069.3626264921.

The spelling of 1222855117 in words is "one billion, two hundred twenty-two million, eight hundred fifty-five thousand, one hundred seventeen".