12166501 has 2 divisors, whose sum is σ = 12166502. Its totient is φ = 12166500.

The previous prime is 12166493. The next prime is 12166513. The reversal of 12166501 is 10566121.

12166501 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11737476 + 429025 = 3426^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 12166501 - 2³ = 12166493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12166201) 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 as a sum of consecutive naturals, namely, 6083250 + 6083251.

It is an arithmetic number, because the mean of its divisors is an integer number (6083251).

Almost surely, 2^12166501 is an apocalyptic number.

It is an amenable number.

12166501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12166501 is an equidigital number, since it uses as much as digits as its factorization.

12166501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 12166501 is about 3488.0511750833. The cubic root of 12166501 is about 229.9968556596.

The spelling of 12166501 in words is "twelve million, one hundred sixty-six thousand, five hundred one".