211120122211 has 2 divisors, whose sum is σ = 211120122212.
Its totient is φ = 211120122210.
The previous prime is 211120122173. The next prime is 211120122221. The reversal of 211120122211 is 112221021112.
Adding to 211120122211 its reverse (112221021112), we get a palindrome (323341143323).
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-211120122211 is a prime.
It is not a weakly prime, because it can be changed into another prime (211120122221) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560061105 + 105560061106.
It is an arithmetic number, because the mean of its divisors is an integer number (105560061106).
Almost surely, 2211120122211 is an apocalyptic number.
211120122211 is a deficient number, since it is larger than the sum of its proper divisors (1).
211120122211 is an equidigital number, since it uses as much as digits as its factorization.
211120122211 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 32, while the sum is 16.
The spelling of 211120122211 in words is "two hundred eleven billion, one hundred twenty million, one hundred twenty-two thousand, two hundred eleven".