12171066 has 8 divisors (see below), whose sum is σ = 24342144. Its totient is φ = 4057020.

The previous prime is 12171041. The next prime is 12171067. The reversal of 12171066 is 66017121.

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

12171066 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12171067) 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, 1014250 + ... + 1014261.

It is an arithmetic number, because the mean of its divisors is an integer number (3042768).

Almost surely, 2^12171066 is an apocalyptic number.

12171066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12171066 is a wasteful number, since it uses less digits than its factorization.

12171066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028516.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12171066 is about 3488.7054905796. The cubic root of 12171066 is about 230.0256178145.

Adding to 12171066 its reverse (66017121), we get a palindrome (78188187).

The spelling of 12171066 in words is "twelve million, one hundred seventy-one thousand, sixty-six".