13223212320 has 48 divisors (see below), whose sum is σ = 41653120320. Its totient is φ = 3526189824.

The previous prime is 13223212319. The next prime is 13223212349. The reversal of 13223212320 is 2321232231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13773700 + ... + 13774659.

It is an arithmetic number, because the mean of its divisors is an integer number (867773340).

Almost surely, 2^13223212320 is an apocalyptic number.

13223212320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13223212320 is an abundant number, since it is smaller than the sum of its proper divisors (28429908000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13223212320 is a wasteful number, since it uses less digits than its factorization.

13223212320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27548377 (or 27548369 counting only the distinct ones).

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

Adding to 13223212320 its reverse (2321232231), we get a palindrome (15544444551).

The spelling of 13223212320 in words is "thirteen billion, two hundred twenty-three million, two hundred twelve thousand, three hundred twenty".