21323313303311 has 2 divisors, whose sum is σ = 21323313303312. Its totient is φ = 21323313303310.

The previous prime is 21323313303287. The next prime is 21323313303323. The reversal of 21323313303311 is 11330331332312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21323313303311 - 2¹⁰ = 21323313302287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21323313303211) 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, 10661656651655 + 10661656651656.

It is an arithmetic number, because the mean of its divisors is an integer number (10661656651656).

Almost surely, 2^{21323313303311} is an apocalyptic number.

21323313303311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323313303311 is an equidigital number, since it uses as much as digits as its factorization.

21323313303311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 29.

Adding to 21323313303311 its reverse (11330331332312), we get a palindrome (32653644635623).

The spelling of 21323313303311 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred thirteen million, three hundred three thousand, three hundred eleven".