12220031320 has 64 divisors (see below), whose sum is σ = 31545391680. Its totient is φ = 4173398016.

The previous prime is 12220031303. The next prime is 12220031359. The reversal of 12220031320 is 2313002221.

12220031320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12220031294 and 12220031303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12949 + ... + 156868.

It is an arithmetic number, because the mean of its divisors is an integer number (492896745).

Almost surely, 2^12220031320 is an apocalyptic number.

12220031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12220031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15772695840).

12220031320 is an abundant number, since it is smaller than the sum of its proper divisors (19325360360).

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

12220031320 is a wasteful number, since it uses less digits than its factorization.

12220031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170092 (or 170088 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12220031320 its reverse (2313002221), we get a palindrome (14533033541).

The spelling of 12220031320 in words is "twelve billion, two hundred twenty million, thirty-one thousand, three hundred twenty".