12311321022001 has 2 divisors, whose sum is σ = 12311321022002. Its totient is φ = 12311321022000.

The previous prime is 12311321021999. The next prime is 12311321022041. The reversal of 12311321022001 is 10022012311321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8582556160000 + 3728764862001 = 2929600^2 + 1931001^2 .

It is a cyclic number.

It is not a de Polignac number, because 12311321022001 - 2¹ = 12311321021999 is a prime.

Together with 12311321021999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12311321022001.

It is not a weakly prime, because it can be changed into another prime (12311321022041) 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, 6155660511000 + 6155660511001.

It is an arithmetic number, because the mean of its divisors is an integer number (6155660511001).

Almost surely, 2^{12311321022001} is an apocalyptic number.

It is an amenable number.

12311321022001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311321022001 is an equidigital number, since it uses as much as digits as its factorization.

12311321022001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12311321022001 its reverse (10022012311321), we get a palindrome (22333333333322).

The spelling of 12311321022001 in words is "twelve trillion, three hundred eleven billion, three hundred twenty-one million, twenty-two thousand, one".