12660011 has 8 divisors (see below), whose sum is σ = 15581664. Its totient is φ = 10016640.

The previous prime is 12659963. The next prime is 12660013. The reversal of 12660011 is 11006621.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12660011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12660013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69470 + ... + 69651.

It is an arithmetic number, because the mean of its divisors is an integer number (1947708).

Almost surely, 2^12660011 is an apocalyptic number.

12660011 is a deficient number, since it is larger than the sum of its proper divisors (2921653).

12660011 is a wasteful number, since it uses less digits than its factorization.

12660011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139141.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 12660011 is about 3558.0909207045. The cubic root of 12660011 is about 233.0655197126.

Adding to 12660011 its reverse (11006621), we get a palindrome (23666632).

The spelling of 12660011 in words is "twelve million, six hundred sixty thousand, eleven".