13122011323 has 4 divisors (see below), whose sum is σ = 13893894360. Its totient is φ = 12350128288.

The previous prime is 13122011239. The next prime is 13122011369. The reversal of 13122011323 is 32311022131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32311022131 = 53 ⋅609641927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13122011323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13122011323.

It is not an unprimeable number, because it can be changed into a prime (13122011393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385941493 + ... + 385941526.

It is an arithmetic number, because the mean of its divisors is an integer number (3473473590).

Almost surely, 2^13122011323 is an apocalyptic number.

13122011323 is a deficient number, since it is larger than the sum of its proper divisors (771883037).

13122011323 is an equidigital number, since it uses as much as digits as its factorization.

13122011323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771883036.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13122011323 its reverse (32311022131), we get a palindrome (45433033454).

The spelling of 13122011323 in words is "thirteen billion, one hundred twenty-two million, eleven thousand, three hundred twenty-three".