12220112320 has 112 divisors (see below), whose sum is σ = 32102316288. Its totient is φ = 4401930240.

The previous prime is 12220112309. The next prime is 12220112323. The reversal of 12220112320 is 2321102221.

It is a happy number.

It is a super-2 number, since 2×12220112320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12220112294 and 12220112303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220112323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134737 + ... + 206383.

It is an arithmetic number, because the mean of its divisors is an integer number (286627824).

Almost surely, 2^12220112320 is an apocalyptic number.

12220112320 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 12220112320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16051158144).

12220112320 is an abundant number, since it is smaller than the sum of its proper divisors (19882203968).

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

12220112320 is a wasteful number, since it uses less digits than its factorization.

12220112320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71718 (or 71708 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12220112320 its reverse (2321102221), we get a palindrome (14541214541).

The spelling of 12220112320 in words is "twelve billion, two hundred twenty million, one hundred twelve thousand, three hundred twenty".