13120213321 has 4 divisors (see below), whose sum is σ = 13572634500. Its totient is φ = 12667792144.

The previous prime is 13120213313. The next prime is 13120213331. The reversal of 13120213321 is 12331202131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12331202131 = 67 ⋅184047793.

It can be written as a sum of positive squares in 2 ways, for example, as 10719703296 + 2400510025 = 103536^2 + 48995^2 .

It is a cyclic number.

It is not a de Polignac number, because 13120213321 - 2³ = 13120213313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13120213331) 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, 226210546 + ... + 226210603.

It is an arithmetic number, because the mean of its divisors is an integer number (3393158625).

Almost surely, 2^13120213321 is an apocalyptic number.

It is an amenable number.

13120213321 is a deficient number, since it is larger than the sum of its proper divisors (452421179).

13120213321 is an equidigital number, since it uses as much as digits as its factorization.

13120213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452421178.

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

Adding to 13120213321 its reverse (12331202131), we get a palindrome (25451415452).

The spelling of 13120213321 in words is "thirteen billion, one hundred twenty million, two hundred thirteen thousand, three hundred twenty-one".