12166851 has 8 divisors (see below), whose sum is σ = 16269840. Its totient is φ = 8087552.

The previous prime is 12166841. The next prime is 12166853. The reversal of 12166851 is 15866121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12166851 - 2¹⁸ = 11904707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12166853) 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 7 ways as a sum of consecutive naturals, for example, 4686 + ... + 6803.

It is an arithmetic number, because the mean of its divisors is an integer number (2033730).

Almost surely, 2^12166851 is an apocalyptic number.

12166851 is a deficient number, since it is larger than the sum of its proper divisors (4102989).

12166851 is a wasteful number, since it uses less digits than its factorization.

12166851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11845.

The product of its digits is 2880, while the sum is 30.

The square root of 12166851 is about 3488.1013460047. The cubic root of 12166851 is about 229.9990611178. Note that the first 3 decimals are identical.

The spelling of 12166851 in words is "twelve million, one hundred sixty-six thousand, eight hundred fifty-one".