12020320320000 has 400 divisors, whose sum is σ = 40168791622080. Its totient is φ = 3193163776000.

The previous prime is 12020320319999. The next prime is 12020320320023. The reversal of 12020320320000 is 2302302021.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 252456196 + ... + 252503804.

Almost surely, 2^{12020320320000} is an apocalyptic number.

12020320320000 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 12020320320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20084395811040).

12020320320000 is an abundant number, since it is smaller than the sum of its proper divisors (28148471302080).

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

12020320320000 is an frugal number, since it uses more digits than its factorization.

12020320320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47913 (or 47882 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 12020320320000 its reverse (2302302021), we get a palindrome (12022622622021).

The spelling of 12020320320000 in words is "twelve trillion, twenty billion, three hundred twenty million, three hundred twenty thousand".