11111111202211 has 2 divisors, whose sum is σ = 11111111202212. Its totient is φ = 11111111202210.

The previous prime is 11111111202097. The next prime is 11111111202229. The reversal of 11111111202211 is 11220211111111.

It is a strong prime.

It is an emirp because it is prime and its reverse (11220211111111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11111111202211 - 2¹⁷ = 11111111071139 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111111206211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555555601105 + 5555555601106.

It is an arithmetic number, because the mean of its divisors is an integer number (5555555601106).

Almost surely, 2^{11111111202211} is an apocalyptic number.

11111111202211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111111202211 is an equidigital number, since it uses as much as digits as its factorization.

11111111202211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11111111202211 its reverse (11220211111111), we get a palindrome (22331322313322).

The spelling of 11111111202211 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, two hundred two thousand, two hundred eleven".