13234021321 has 4 divisors (see below), whose sum is σ = 13234301200. Its totient is φ = 13233741444.

The previous prime is 13234021319. The next prime is 13234021337. The reversal of 13234021321 is 12312043231.

13234021321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12312043231 = 257 ⋅47906783.

It is a cyclic number.

It is not a de Polignac number, because 13234021321 - 2¹ = 13234021319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13234021292 and 13234021301.

It is not an unprimeable number, because it can be changed into a prime (13234021391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49551 + ... + 170068.

It is an arithmetic number, because the mean of its divisors is an integer number (3308575300).

Almost surely, 2^13234021321 is an apocalyptic number.

It is an amenable number.

13234021321 is a deficient number, since it is larger than the sum of its proper divisors (279879).

13234021321 is an equidigital number, since it uses as much as digits as its factorization.

13234021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279878.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13234021321 its reverse (12312043231), we get a palindrome (25546064552).

The spelling of 13234021321 in words is "thirteen billion, two hundred thirty-four million, twenty-one thousand, three hundred twenty-one".