12421166 has 8 divisors (see below), whose sum is σ = 18894384. Its totient is φ = 6123040.

The previous prime is 12421163. The next prime is 12421177. The reversal of 12421166 is 66112421.

12421166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43595 + ... + 43878.

It is an arithmetic number, because the mean of its divisors is an integer number (2361798).

Almost surely, 2^12421166 is an apocalyptic number.

12421166 is a deficient number, since it is larger than the sum of its proper divisors (6473218).

12421166 is an equidigital number, since it uses as much as digits as its factorization.

12421166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87546.

The product of its digits is 576, while the sum is 23.

The square root of 12421166 is about 3524.3674609779. The cubic root of 12421166 is about 231.5905257315.

Adding to 12421166 its reverse (66112421), we get a palindrome (78533587).

The spelling of 12421166 in words is "twelve million, four hundred twenty-one thousand, one hundred sixty-six".