12912611 has 4 divisors (see below), whose sum is σ = 12919800. Its totient is φ = 12905424.

The previous prime is 12912589. The next prime is 12912619. The reversal of 12912611 is 11621921.

It is a happy number.

12912611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12912611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12912619) 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, 1700 + ... + 5358.

It is an arithmetic number, because the mean of its divisors is an integer number (3229950).

Almost surely, 2^12912611 is an apocalyptic number.

12912611 is a deficient number, since it is larger than the sum of its proper divisors (7189).

12912611 is an equidigital number, since it uses as much as digits as its factorization.

12912611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7188.

The product of its digits is 216, while the sum is 23.

The square root of 12912611 is about 3593.4121667296. The cubic root of 12912611 is about 234.6054099412.

The spelling of 12912611 in words is "twelve million, nine hundred twelve thousand, six hundred eleven".