13220321120 has 48 divisors (see below), whose sum is σ = 31241427840. Its totient is φ = 5286703104.

The previous prime is 13220321047. The next prime is 13220321141. The reversal of 13220321120 is 2112302231.

It is a congruent number.

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, 743696 + ... + 761264.

It is an arithmetic number, because the mean of its divisors is an integer number (650863080).

Almost surely, 2^13220321120 is an apocalyptic number.

13220321120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13220321120 is an abundant number, since it is smaller than the sum of its proper divisors (18021106720).

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

13220321120 is a wasteful number, since it uses less digits than its factorization.

13220321120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22287 (or 22279 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13220321120 its reverse (2112302231), we get a palindrome (15332623351).

The spelling of 13220321120 in words is "thirteen billion, two hundred twenty million, three hundred twenty-one thousand, one hundred twenty".