211330122011 has 2 divisors, whose sum is σ = 211330122012. Its totient is φ = 211330122010.

The previous prime is 211330122001. The next prime is 211330122013. The reversal of 211330122011 is 110221033112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211330122011 is a prime.

Together with 211330122013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211330122013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105665061005 + 105665061006.

It is an arithmetic number, because the mean of its divisors is an integer number (105665061006).

Almost surely, 2^211330122011 is an apocalyptic number.

211330122011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211330122011 is an equidigital number, since it uses as much as digits as its factorization.

211330122011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 211330122011 its reverse (110221033112), we get a palindrome (321551155123).

It can be divided in two parts, 2113301 and 22011, that added together give a palindrome (2135312).

The spelling of 211330122011 in words is "two hundred eleven billion, three hundred thirty million, one hundred twenty-two thousand, eleven".