2311212232321 has 2 divisors, whose sum is σ = 2311212232322. Its totient is φ = 2311212232320.

The previous prime is 2311212232319. The next prime is 2311212232339. The reversal of 2311212232321 is 1232322121132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2097966846096 + 213245386225 = 1448436^2 + 461785^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311212232321 - 2¹ = 2311212232319 is a prime.

Together with 2311212232319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2311212232361) 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, 1155606116160 + 1155606116161.

It is an arithmetic number, because the mean of its divisors is an integer number (1155606116161).

Almost surely, 2^{2311212232321} is an apocalyptic number.

It is an amenable number.

2311212232321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311212232321 is an equidigital number, since it uses as much as digits as its factorization.

2311212232321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

Adding to 2311212232321 its reverse (1232322121132), we get a palindrome (3543534353453).

The spelling of 2311212232321 in words is "two trillion, three hundred eleven billion, two hundred twelve million, two hundred thirty-two thousand, three hundred twenty-one".