11101122211 has 2 divisors, whose sum is σ = 11101122212. Its totient is φ = 11101122210.

The previous prime is 11101122199. The next prime is 11101122259. The reversal of 11101122211 is 11222110111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11101122211 - 2³³ = 2511187619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101122191 and 11101122200.

It is not a weakly prime, because it can be changed into another prime (11101122311) 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, 5550561105 + 5550561106.

It is an arithmetic number, because the mean of its divisors is an integer number (5550561106).

Almost surely, 2^11101122211 is an apocalyptic number.

11101122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101122211 is an equidigital number, since it uses as much as digits as its factorization.

11101122211 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 13.

Adding to 11101122211 its reverse (11222110111), we get a palindrome (22323232322).

The spelling of 11101122211 in words is "eleven billion, one hundred one million, one hundred twenty-two thousand, two hundred eleven".