12112865 has 8 divisors (see below), whose sum is σ = 15036840. Its totient is φ = 9356032.

The previous prime is 12112819. The next prime is 12112883. The reversal of 12112865 is 56821121.

It can be written as a sum of positive squares in 4 ways, for example, as 5180176 + 6932689 = 2276^2 + 2633^2 .

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 12112865 - 2⁸ = 12112609 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41624 + ... + 41913.

It is an arithmetic number, because the mean of its divisors is an integer number (1879605).

Almost surely, 2^12112865 is an apocalyptic number.

It is an amenable number.

12112865 is a deficient number, since it is larger than the sum of its proper divisors (2923975).

12112865 is an equidigital number, since it uses as much as digits as its factorization.

12112865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83571.

The product of its digits is 960, while the sum is 26.

The square root of 12112865 is about 3480.3541486464. The cubic root of 12112865 is about 229.6583775223.

Adding to 12112865 its reverse (56821121), we get a palindrome (68933986).

The spelling of 12112865 in words is "twelve million, one hundred twelve thousand, eight hundred sixty-five".