115112101 has 4 divisors (see below), whose sum is σ = 123966892. Its totient is φ = 106257312.

The previous prime is 115112093. The next prime is 115112113. The reversal of 115112101 is 101211511.

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 15132100 + 99980001 = 3890^2 + 9999^2 .

It is a cyclic number.

It is not a de Polignac number, because 115112101 - 2³ = 115112093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 8854777 = 115112101 / (1 + 1 + 5 + 1 + 1 + 2 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115116101) 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, 4427376 + ... + 4427401.

It is an arithmetic number, because the mean of its divisors is an integer number (30991723).

Almost surely, 2^115112101 is an apocalyptic number.

It is an amenable number.

115112101 is a deficient number, since it is larger than the sum of its proper divisors (8854791).

115112101 is an equidigital number, since it uses as much as digits as its factorization.

115112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854790.

The product of its (nonzero) digits is 10, while the sum is 13.

The square root of 115112101 is about 10729.0307577153. The cubic root of 115112101 is about 486.4523736494.

Adding to 115112101 its reverse (101211511), we get a palindrome (216323612).

The spelling of 115112101 in words is "one hundred fifteen million, one hundred twelve thousand, one hundred one".