211122104231 has 2 divisors, whose sum is σ = 211122104232. Its totient is φ = 211122104230.

The previous prime is 211122104227. The next prime is 211122104233. The reversal of 211122104231 is 132401221112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211122104231 - 2² = 211122104227 is a prime.

It is a super-2 number, since 2×211122104231² (a number of 23 digits) contains 22 as substring.

Together with 211122104233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211122104233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561052115 + 105561052116.

It is an arithmetic number, because the mean of its divisors is an integer number (105561052116).

Almost surely, 2^211122104231 is an apocalyptic number.

211122104231 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122104231 is an equidigital number, since it uses as much as digits as its factorization.

211122104231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 211122104231 its reverse (132401221112), we get a palindrome (343523325343).

The spelling of 211122104231 in words is "two hundred eleven billion, one hundred twenty-two million, one hundred four thousand, two hundred thirty-one".