13320420321 has 8 divisors (see below), whose sum is σ = 19126757440. Its totient is φ = 8197181712.

The previous prime is 13320420313. The next prime is 13320420343. The reversal of 13320420321 is 12302402331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13320420321 - 2³ = 13320420313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13320420391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170774581 + ... + 170774658.

It is an arithmetic number, because the mean of its divisors is an integer number (2390844680).

Almost surely, 2^13320420321 is an apocalyptic number.

It is an amenable number.

13320420321 is a deficient number, since it is larger than the sum of its proper divisors (5806337119).

13320420321 is a wasteful number, since it uses less digits than its factorization.

13320420321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341549255.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13320420321 its reverse (12302402331), we get a palindrome (25622822652).

The spelling of 13320420321 in words is "thirteen billion, three hundred twenty million, four hundred twenty thousand, three hundred twenty-one".