118422217 has 4 divisors (see below), whose sum is σ = 118496196. Its totient is φ = 118348240.

The previous prime is 118422211. The next prime is 118422257. The reversal of 118422217 is 712224811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49266361 + 69155856 = 7019^2 + 8316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118422217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118422211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34534 + ... + 37807.

It is an arithmetic number, because the mean of its divisors is an integer number (29624049).

Almost surely, 2^118422217 is an apocalyptic number.

It is an amenable number.

118422217 is a deficient number, since it is larger than the sum of its proper divisors (73979).

118422217 is an equidigital number, since it uses as much as digits as its factorization.

118422217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73978.

The product of its digits is 1792, while the sum is 28.

The square root of 118422217 is about 10882.1972505556. The cubic root of 118422217 is about 491.0711220830.

The spelling of 118422217 in words is "one hundred eighteen million, four hundred twenty-two thousand, two hundred seventeen".