211303122011 has 2 divisors, whose sum is σ = 211303122012. Its totient is φ = 211303122010.

The previous prime is 211303121983. The next prime is 211303122013. The reversal of 211303122011 is 110221303112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211303122011 - 2²⁶ = 211236013147 is a prime.

Together with 211303122013, 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 (211303122013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105651561005 + 105651561006.

It is an arithmetic number, because the mean of its divisors is an integer number (105651561006).

Almost surely, 2^211303122011 is an apocalyptic number.

211303122011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211303122011 is an equidigital number, since it uses as much as digits as its factorization.

211303122011 is an evil number, because the sum of its binary digits is even.

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

Adding to 211303122011 its reverse (110221303112), we get a palindrome (321524425123).

The spelling of 211303122011 in words is "two hundred eleven billion, three hundred three million, one hundred twenty-two thousand, eleven".