12115137 has 4 divisors (see below), whose sum is σ = 16153520. Its totient is φ = 8076756.

The previous prime is 12115133. The next prime is 12115139. The reversal of 12115137 is 73151121.

It is a happy number.

12115137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 12115137 - 2² = 12115133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12115133) 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, 2019187 + ... + 2019192.

It is an arithmetic number, because the mean of its divisors is an integer number (4038380).

Almost surely, 2^12115137 is an apocalyptic number.

It is an amenable number.

12115137 is a deficient number, since it is larger than the sum of its proper divisors (4038383).

12115137 is an equidigital number, since it uses as much as digits as its factorization.

12115137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038382.

The product of its digits is 210, while the sum is 21.

The square root of 12115137 is about 3480.6805369065. The cubic root of 12115137 is about 229.6727355681.

Adding to 12115137 its reverse (73151121), we get a palindrome (85266258).

The spelling of 12115137 in words is "twelve million, one hundred fifteen thousand, one hundred thirty-seven".