11665211 has 2 divisors, whose sum is σ = 11665212. Its totient is φ = 11665210.

The previous prime is 11665189. The next prime is 11665223. The reversal of 11665211 is 11256611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11665211 is a prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (11665231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5832605 + 5832606.

It is an arithmetic number, because the mean of its divisors is an integer number (5832606).

Almost surely, 2^11665211 is an apocalyptic number.

11665211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11665211 is an equidigital number, since it uses as much as digits as its factorization.

11665211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 23.

The square root of 11665211 is about 3415.4371608917. The cubic root of 11665211 is about 226.7936372917.

The spelling of 11665211 in words is "eleven million, six hundred sixty-five thousand, two hundred eleven".