115121198 has 4 divisors (see below), whose sum is σ = 172681800. Its totient is φ = 57560598.

The previous prime is 115121183. The next prime is 115121207. The reversal of 115121198 is 891121511.

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

It is a self number, because there is not a number n which added to its sum of digits gives 115121198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28780298 + ... + 28780301.

It is an arithmetic number, because the mean of its divisors is an integer number (43170450).

Almost surely, 2^115121198 is an apocalyptic number.

115121198 is a deficient number, since it is larger than the sum of its proper divisors (57560602).

115121198 is an equidigital number, since it uses as much as digits as its factorization.

115121198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57560601.

The product of its digits is 720, while the sum is 29.

The square root of 115121198 is about 10729.4546925741. The cubic root of 115121198 is about 486.4651876532.

The spelling of 115121198 in words is "one hundred fifteen million, one hundred twenty-one thousand, one hundred ninety-eight".