12115251 has 14 divisors (see below), whose sum is σ = 18165660. Its totient is φ = 8076348.

The previous prime is 12115231. The next prime is 12115267. The reversal of 12115251 is 15251121.

It is not a de Polignac number, because 12115251 - 2⁷ = 12115123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12115211) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7581 + ... + 9038.

Almost surely, 2^12115251 is an apocalyptic number.

12115251 is a deficient number, since it is larger than the sum of its proper divisors (6050409).

12115251 is an frugal number, since it uses more digits than its factorization.

12115251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16637 (or 16622 counting only the distinct ones).

The product of its digits is 100, while the sum is 18.

The square root of 12115251 is about 3480.6969129759. The cubic root of 12115251 is about 229.6734559510.

Adding to 12115251 its reverse (15251121), we get a palindrome (27366372).

The spelling of 12115251 in words is "twelve million, one hundred fifteen thousand, two hundred fifty-one".