13213313121023 has 4 divisors (see below), whose sum is σ = 13213343483208. Its totient is φ = 13213282758840.

The previous prime is 13213313120989. The next prime is 13213313121077. The reversal of 13213313121023 is 32012131331231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13213313121023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13213313120983 and 13213313121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213313121823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14518673 + ... + 15401898.

It is an arithmetic number, because the mean of its divisors is an integer number (3303335870802).

Almost surely, 2^{13213313121023} is an apocalyptic number.

13213313121023 is a deficient number, since it is larger than the sum of its proper divisors (30362185).

13213313121023 is an equidigital number, since it uses as much as digits as its factorization.

13213313121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30362184.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 13213313121023 its reverse (32012131331231), we get a palindrome (45225444452254).

The spelling of 13213313121023 in words is "thirteen trillion, two hundred thirteen billion, three hundred thirteen million, one hundred twenty-one thousand, twenty-three".