13021321133213 has 4 divisors (see below), whose sum is σ = 13021858584540. Its totient is φ = 13020783681888.

The previous prime is 13021321133179. The next prime is 13021321133243. The reversal of 13021321133213 is 31233112312031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7832592950329 + 5188728182884 = 2798677^2 + 2277878^2 .

It is a cyclic number.

It is not a de Polignac number, because 13021321133213 - 2¹⁴ = 13021321116829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021321133243) 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, 268689320 + ... + 268737777.

It is an arithmetic number, because the mean of its divisors is an integer number (3255464646135).

Almost surely, 2^{13021321133213} is an apocalyptic number.

It is an amenable number.

13021321133213 is a deficient number, since it is larger than the sum of its proper divisors (537451327).

13021321133213 is an equidigital number, since it uses as much as digits as its factorization.

13021321133213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537451326.

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

Adding to 13021321133213 its reverse (31233112312031), we get a palindrome (44254433445244).

The spelling of 13021321133213 in words is "thirteen trillion, twenty-one billion, three hundred twenty-one million, one hundred thirty-three thousand, two hundred thirteen".