12660201 has 6 divisors (see below), whose sum is σ = 18286970. Its totient is φ = 8440128.

The previous prime is 12660191. The next prime is 12660203. The reversal of 12660201 is 10206621.

It is a happy number.

12660201 is a `hidden beast` number, since 1 + 2 + 660 + 2 + 0 + 1 = 666.

12660201 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9144576 + 3515625 = 3024^2 + 1875^2 .

It is not a de Polignac number, because 12660201 - 2⁵ = 12660169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12660203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 703336 + ... + 703353.

Almost surely, 2^12660201 is an apocalyptic number.

It is an amenable number.

12660201 is a deficient number, since it is larger than the sum of its proper divisors (5626769).

12660201 is a wasteful number, since it uses less digits than its factorization.

12660201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406695 (or 1406692 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12660201 is about 3558.1176203156. The cubic root of 12660201 is about 233.0666856470.

Adding to 12660201 its reverse (10206621), we get a palindrome (22866822).

The spelling of 12660201 in words is "twelve million, six hundred sixty thousand, two hundred one".