12116191 has 2 divisors, whose sum is σ = 12116192. Its totient is φ = 12116190.

The previous prime is 12116179. The next prime is 12116201. The reversal of 12116191 is 19161121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12116191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12116141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6058095 + 6058096.

It is an arithmetic number, because the mean of its divisors is an integer number (6058096).

Almost surely, 2^12116191 is an apocalyptic number.

12116191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12116191 is an equidigital number, since it uses as much as digits as its factorization.

12116191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 22.

The square root of 12116191 is about 3480.8319407866. The cubic root of 12116191 is about 229.6793957774.

The spelling of 12116191 in words is "twelve million, one hundred sixteen thousand, one hundred ninety-one".