211313122211 has 2 divisors, whose sum is σ = 211313122212. Its totient is φ = 211313122210.

The previous prime is 211313122193. The next prime is 211313122247. The reversal of 211313122211 is 112221313112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211313122211 is a prime.

It is a super-2 number, since 2×211313122211² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211313122511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105656561105 + 105656561106.

It is an arithmetic number, because the mean of its divisors is an integer number (105656561106).

Almost surely, 2^211313122211 is an apocalyptic number.

211313122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

211313122211 is an equidigital number, since it uses as much as digits as its factorization.

211313122211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 20.

Adding to 211313122211 its reverse (112221313112), we get a palindrome (323534435323).

The spelling of 211313122211 in words is "two hundred eleven billion, three hundred thirteen million, one hundred twenty-two thousand, two hundred eleven".