13212221120 has 56 divisors (see below), whose sum is σ = 35956122144. Its totient is φ = 4529903616.

The previous prime is 13212221117. The next prime is 13212221167. The reversal of 13212221120 is 2112221231.

It is a tau number, because it is divible by the number of its divisors (56).

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, 2946917 + ... + 2951396.

Almost surely, 2^13212221120 is an apocalyptic number.

13212221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13212221120 is an abundant number, since it is smaller than the sum of its proper divisors (22743901024).

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

13212221120 is an equidigital number, since it uses as much as digits as its factorization.

13212221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5898337 (or 5898327 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 13212221120 its reverse (2112221231), we get a palindrome (15324442351).

The spelling of 13212221120 in words is "thirteen billion, two hundred twelve million, two hundred twenty-one thousand, one hundred twenty".