13111212133321 has 2 divisors, whose sum is σ = 13111212133322. Its totient is φ = 13111212133320.

The previous prime is 13111212133319. The next prime is 13111212133339. The reversal of 13111212133321 is 12333121211131.

13111212133321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12037180447296 + 1074031686025 = 3469464^2 + 1036355^2 .

It is a cyclic number.

It is not a de Polignac number, because 13111212133321 - 2¹ = 13111212133319 is a prime.

Together with 13111212133319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13111212133361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555606066660 + 6555606066661.

It is an arithmetic number, because the mean of its divisors is an integer number (6555606066661).

Almost surely, 2^{13111212133321} is an apocalyptic number.

It is an amenable number.

13111212133321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13111212133321 is an equidigital number, since it uses as much as digits as its factorization.

13111212133321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

Adding to 13111212133321 its reverse (12333121211131), we get a palindrome (25444333344452).

The spelling of 13111212133321 in words is "thirteen trillion, one hundred eleven billion, two hundred twelve million, one hundred thirty-three thousand, three hundred twenty-one".