122170817 has 8 divisors (see below), whose sum is σ = 129060960. Its totient is φ = 115326720.

The previous prime is 122170801. The next prime is 122170819. The reversal of 122170817 is 718071221.

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

It is a cyclic number.

It is not a de Polignac number, because 122170817 - 2⁴ = 122170801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122170817.

It is not an unprimeable number, because it can be changed into a prime (122170819) 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, 5984 + ... + 16737.

It is an arithmetic number, because the mean of its divisors is an integer number (16132620).

Almost surely, 2^122170817 is an apocalyptic number.

It is an amenable number.

122170817 is a deficient number, since it is larger than the sum of its proper divisors (6890143).

122170817 is a wasteful number, since it uses less digits than its factorization.

122170817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23023.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 122170817 is about 11053.0908346942. The cubic root of 122170817 is about 496.1989330037.

The spelling of 122170817 in words is "one hundred twenty-two million, one hundred seventy thousand, eight hundred seventeen".