13220121323 has 8 divisors (see below), whose sum is σ = 13279739616. Its totient is φ = 13160574400.

The previous prime is 13220121307. The next prime is 13220121373. The reversal of 13220121323 is 32312102231.

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

It is a cyclic number.

It is not a de Polignac number, because 13220121323 - 2⁴ = 13220121307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13220121295 and 13220121304.

It is not an unprimeable number, because it can be changed into a prime (13220121373) 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, 372533 + ... + 406473.

It is an arithmetic number, because the mean of its divisors is an integer number (1659967452).

Almost surely, 2^13220121323 is an apocalyptic number.

13220121323 is a deficient number, since it is larger than the sum of its proper divisors (59618293).

13220121323 is a wasteful number, since it uses less digits than its factorization.

13220121323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35685.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13220121323 its reverse (32312102231), we get a palindrome (45532223554).

The spelling of 13220121323 in words is "thirteen billion, two hundred twenty million, one hundred twenty-one thousand, three hundred twenty-three".