13111013321 has 4 divisors (see below), whose sum is σ = 14984015232. Its totient is φ = 11238011412.

The previous prime is 13111013317. The next prime is 13111013347. The reversal of 13111013321 is 12331011131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13111013321 - 2² = 13111013317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13111013321.

It is not an unprimeable number, because it can be changed into a prime (13111013351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936500945 + ... + 936500958.

It is an arithmetic number, because the mean of its divisors is an integer number (3746003808).

Almost surely, 2^13111013321 is an apocalyptic number.

It is an amenable number.

13111013321 is a deficient number, since it is larger than the sum of its proper divisors (1873001911).

13111013321 is an equidigital number, since it uses as much as digits as its factorization.

13111013321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873001910.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 13111013321 its reverse (12331011131), we get a palindrome (25442024452).

The spelling of 13111013321 in words is "thirteen billion, one hundred eleven million, thirteen thousand, three hundred twenty-one".