12115199 has 2 divisors, whose sum is σ = 12115200. Its totient is φ = 12115198.

The previous prime is 12115193. The next prime is 12115211. The reversal of 12115199 is 99151121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12115199 - 2¹² = 12111103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12115193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6057599 + 6057600.

It is an arithmetic number, because the mean of its divisors is an integer number (6057600).

Almost surely, 2^12115199 is an apocalyptic number.

12115199 is a deficient number, since it is larger than the sum of its proper divisors (1).

12115199 is an equidigital number, since it uses as much as digits as its factorization.

12115199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 29.

The square root of 12115199 is about 3480.6894431994. The cubic root of 12115199 is about 229.6731273559.

The spelling of 12115199 in words is "twelve million, one hundred fifteen thousand, one hundred ninety-nine".