12166611 has 12 divisors (see below), whose sum is σ = 17233752. Its totient is φ = 7633408.

The previous prime is 12166607. The next prime is 12166667. The reversal of 12166611 is 11666121.

It is not a de Polignac number, because 12166611 - 2² = 12166607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12166681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6150 + ... + 7883.

It is an arithmetic number, because the mean of its divisors is an integer number (1436146).

Almost surely, 2^12166611 is an apocalyptic number.

12166611 is a deficient number, since it is larger than the sum of its proper divisors (5067141).

12166611 is a wasteful number, since it uses less digits than its factorization.

12166611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14070 (or 14053 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 12166611 is about 3488.0669431649. The cubic root of 12166611 is about 229.9975488082.

It can be divided in two parts, 1 and 2166611, that added together give a palindrome (2166612).

The spelling of 12166611 in words is "twelve million, one hundred sixty-six thousand, six hundred eleven".