12611191 has 16 divisors (see below), whose sum is σ = 13543200. Its totient is φ = 11726208.

The previous prime is 12611189. The next prime is 12611197. The reversal of 12611191 is 19111621.

It is a cyclic number.

It is not a de Polignac number, because 12611191 - 2¹ = 12611189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12611197) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 115645 + ... + 115753.

It is an arithmetic number, because the mean of its divisors is an integer number (846450).

Almost surely, 2^12611191 is an apocalyptic number.

12611191 is a deficient number, since it is larger than the sum of its proper divisors (932009).

12611191 is a wasteful number, since it uses less digits than its factorization.

12611191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258.

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

The square root of 12611191 is about 3551.2238735399. The cubic root of 12611191 is about 232.7655485188.

The spelling of 12611191 in words is "twelve million, six hundred eleven thousand, one hundred ninety-one".