12166445 has 8 divisors (see below), whose sum is σ = 14627040. Its totient is φ = 9714960.

The previous prime is 12166439. The next prime is 12166447. The reversal of 12166445 is 54466121.

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

It is not a de Polignac number, because 12166445 - 2¹² = 12162349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12166447) 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, 1130 + ... + 5060.

It is an arithmetic number, because the mean of its divisors is an integer number (1828380).

Almost surely, 2^12166445 is an apocalyptic number.

It is an amenable number.

12166445 is a deficient number, since it is larger than the sum of its proper divisors (2460595).

12166445 is an equidigital number, since it uses as much as digits as its factorization.

12166445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555.

The product of its digits is 5760, while the sum is 29.

The square root of 12166445 is about 3488.0431476689. The cubic root of 12166445 is about 229.9965027824.

It can be divided in two parts, 121 and 66445, that added together give a palindrome (66566).

The spelling of 12166445 in words is "twelve million, one hundred sixty-six thousand, four hundred forty-five".