11868211 has 2 divisors, whose sum is σ = 11868212. Its totient is φ = 11868210.

The previous prime is 11868209. The next prime is 11868223. The reversal of 11868211 is 11286811.

It is a weak prime.

It is an emirp because it is prime and its reverse (11286811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11868211 - 2¹ = 11868209 is a prime.

Together with 11868209, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11868211.

It is not a weakly prime, because it can be changed into another prime (11868251) 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 as a sum of consecutive naturals, namely, 5934105 + 5934106.

It is an arithmetic number, because the mean of its divisors is an integer number (5934106).

Almost surely, 2^11868211 is an apocalyptic number.

11868211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11868211 is an equidigital number, since it uses as much as digits as its factorization.

11868211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 28.

The square root of 11868211 is about 3445.0269955401. The cubic root of 11868211 is about 228.1016462238.

The spelling of 11868211 in words is "eleven million, eight hundred sixty-eight thousand, two hundred eleven".