118221599 has 8 divisors (see below), whose sum is σ = 120429792. Its totient is φ = 116022240.

The previous prime is 118221581. The next prime is 118221601. The reversal of 118221599 is 995122811.

It is a happy number.

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 118221599 - 2²⁴ = 101444383 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 (118221539) by changing a digit.

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, 28757 + ... + 32609.

It is an arithmetic number, because the mean of its divisors is an integer number (15053724).

Almost surely, 2^118221599 is an apocalyptic number.

118221599 is a deficient number, since it is larger than the sum of its proper divisors (2208193).

118221599 is an equidigital number, since it uses as much as digits as its factorization.

118221599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4417.

The product of its digits is 12960, while the sum is 38.

The square root of 118221599 is about 10872.9756276743. The cubic root of 118221599 is about 490.7936589686.

The spelling of 118221599 in words is "one hundred eighteen million, two hundred twenty-one thousand, five hundred ninety-nine".