115121199 has 4 divisors (see below), whose sum is σ = 153494936. Its totient is φ = 76747464.

The previous prime is 115121183. The next prime is 115121207. The reversal of 115121199 is 991121511.

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

It is not a de Polignac number, because 115121199 - 2⁴ = 115121183 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 (115121119) 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, 19186864 + ... + 19186869.

It is an arithmetic number, because the mean of its divisors is an integer number (38373734).

Almost surely, 2^115121199 is an apocalyptic number.

115121199 is a deficient number, since it is larger than the sum of its proper divisors (38373737).

115121199 is an equidigital number, since it uses as much as digits as its factorization.

115121199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38373736.

The product of its digits is 810, while the sum is 30.

The square root of 115121199 is about 10729.4547391748. The cubic root of 115121199 is about 486.4651890617.

The spelling of 115121199 in words is "one hundred fifteen million, one hundred twenty-one thousand, one hundred ninety-nine".