11311204211 has 2 divisors, whose sum is σ = 11311204212. Its totient is φ = 11311204210.

The previous prime is 11311204207. The next prime is 11311204237. The reversal of 11311204211 is 11240211311.

11311204211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11311204211 - 2² = 11311204207 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11311204211.

It is not a weakly prime, because it can be changed into another prime (11311404211) 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, 5655602105 + 5655602106.

It is an arithmetic number, because the mean of its divisors is an integer number (5655602106).

Almost surely, 2^11311204211 is an apocalyptic number.

11311204211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311204211 is an equidigital number, since it uses as much as digits as its factorization.

11311204211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11311204211 its reverse (11240211311), we get a palindrome (22551415522).

The spelling of 11311204211 in words is "eleven billion, three hundred eleven million, two hundred four thousand, two hundred eleven".