12516211 has 2 divisors, whose sum is σ = 12516212. Its totient is φ = 12516210.

The previous prime is 12516169. The next prime is 12516227. The reversal of 12516211 is 11261521.

12516211 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12516211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12516271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258105 + 6258106.

It is an arithmetic number, because the mean of its divisors is an integer number (6258106).

Almost surely, 2^12516211 is an apocalyptic number.

12516211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12516211 is an equidigital number, since it uses as much as digits as its factorization.

12516211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 19.

The square root of 12516211 is about 3537.8257447195. The cubic root of 12516211 is about 232.1797247369.

Adding to 12516211 its reverse (11261521), we get a palindrome (23777732).

The spelling of 12516211 in words is "twelve million, five hundred sixteen thousand, two hundred eleven".