12166651 has 6 divisors (see below), whose sum is σ = 14153100. Its totient is φ = 10428516.

The previous prime is 12166607. The next prime is 12166667. The reversal of 12166651 is 15666121.

It is not a de Polignac number, because 12166651 - 2⁹ = 12166139 is a prime.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 124101 + ... + 124198.

It is an arithmetic number, because the mean of its divisors is an integer number (2358850).

Almost surely, 2^12166651 is an apocalyptic number.

12166651 is a deficient number, since it is larger than the sum of its proper divisors (1986449).

12166651 is an equidigital number, since it uses as much as digits as its factorization.

12166651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248313 (or 248306 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 12166651 is about 3488.0726769951. The cubic root of 12166651 is about 229.9978008611.

The spelling of 12166651 in words is "twelve million, one hundred sixty-six thousand, six hundred fifty-one".