211213320233 has 2 divisors, whose sum is σ = 211213320234. Its totient is φ = 211213320232.

The previous prime is 211213320229. The next prime is 211213320281. The reversal of 211213320233 is 332023312112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139060376464 + 72152943769 = 372908^2 + 268613^2 .

It is a cyclic number.

It is not a de Polignac number, because 211213320233 - 2² = 211213320229 is a prime.

It is a super-2 number, since 2×211213320233² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211213320199 and 211213320208.

It is not a weakly prime, because it can be changed into another prime (211213320733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606660116 + 105606660117.

It is an arithmetic number, because the mean of its divisors is an integer number (105606660117).

Almost surely, 2^211213320233 is an apocalyptic number.

It is an amenable number.

211213320233 is a deficient number, since it is larger than the sum of its proper divisors (1).

211213320233 is an equidigital number, since it uses as much as digits as its factorization.

211213320233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 211213320233 its reverse (332023312112), we get a palindrome (543236632345).

The spelling of 211213320233 in words is "two hundred eleven billion, two hundred thirteen million, three hundred twenty thousand, two hundred thirty-three".