211333221233 has 2 divisors, whose sum is σ = 211333221234. Its totient is φ = 211333221232.

The previous prime is 211333221191. The next prime is 211333221247. The reversal of 211333221233 is 332122333112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186513424384 + 24819796849 = 431872^2 + 157543^2 .

It is a cyclic number.

It is not a de Polignac number, because 211333221233 - 2¹⁶ = 211333155697 is a prime.

It is a super-2 number, since 2×211333221233² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211333221733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105666610616 + 105666610617.

It is an arithmetic number, because the mean of its divisors is an integer number (105666610617).

Almost surely, 2^211333221233 is an apocalyptic number.

It is an amenable number.

211333221233 is a deficient number, since it is larger than the sum of its proper divisors (1).

211333221233 is an equidigital number, since it uses as much as digits as its factorization.

211333221233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 26.

Adding to 211333221233 its reverse (332122333112), we get a palindrome (543455554345).

The spelling of 211333221233 in words is "two hundred eleven billion, three hundred thirty-three million, two hundred twenty-one thousand, two hundred thirty-three".