12004022320 has 80 divisors (see below), whose sum is σ = 29656450080. Its totient is φ = 4503048192.

The previous prime is 12004022309. The next prime is 12004022323. The reversal of 12004022320 is 2322040021.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 12004022294 and 12004022303.

It is not an unprimeable number, because it can be changed into a prime (12004022323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369286 + ... + 400474.

It is an arithmetic number, because the mean of its divisors is an integer number (370705626).

Almost surely, 2^12004022320 is an apocalyptic number.

12004022320 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 12004022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14828225040).

12004022320 is an abundant number, since it is smaller than the sum of its proper divisors (17652427760).

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

12004022320 is a wasteful number, since it uses less digits than its factorization.

12004022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31502 (or 31496 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 12004022320 its reverse (2322040021), we get a palindrome (14326062341).

The spelling of 12004022320 in words is "twelve billion, four million, twenty-two thousand, three hundred twenty".