115212169 has 4 divisors (see below), whose sum is σ = 115459344. Its totient is φ = 114964996.

The previous prime is 115212161. The next prime is 115212233. The reversal of 115212169 is 961212511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115212169 - 2³ = 115212161 is a prime.

It is a super-2 number, since 2×115212169² = 26547687771369122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115212161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122887 + ... + 123820.

It is an arithmetic number, because the mean of its divisors is an integer number (28864836).

Almost surely, 2^115212169 is an apocalyptic number.

It is an amenable number.

115212169 is a deficient number, since it is larger than the sum of its proper divisors (247175).

115212169 is an equidigital number, since it uses as much as digits as its factorization.

115212169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247174.

The product of its digits is 1080, while the sum is 28.

The square root of 115212169 is about 10733.6931668462. The cubic root of 115212169 is about 486.5932919862.

The spelling of 115212169 in words is "one hundred fifteen million, two hundred twelve thousand, one hundred sixty-nine".