13221320120 has 32 divisors (see below), whose sum is σ = 29753060400. Its totient is φ = 5287623168.

The previous prime is 13221320117. The next prime is 13221320131. The reversal of 13221320120 is 2102312231.

It is a super-3 number, since 3×13221320120³ (a number of 31 digits) contains 333 as substring.

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, 239792 + ... + 289728.

Almost surely, 2^13221320120 is an apocalyptic number.

13221320120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221320120 is an abundant number, since it is smaller than the sum of its proper divisors (16531740280).

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

13221320120 is a wasteful number, since it uses less digits than its factorization.

13221320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56567 (or 56563 counting only the distinct ones).

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

Adding to 13221320120 its reverse (2102312231), we get a palindrome (15323632351).

The spelling of 13221320120 in words is "thirteen billion, two hundred twenty-one million, three hundred twenty thousand, one hundred twenty".