12020320320 has 112 divisors (see below), whose sum is σ = 38310433920. Its totient is φ = 3193163776.

The previous prime is 12020320313. The next prime is 12020320321. The reversal of 12020320320 is 2302302021.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12020320320.

It is not an unprimeable number, because it can be changed into a prime (12020320321) 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, 228676 + ... + 276284.

Almost surely, 2^12020320320 is an apocalyptic number.

12020320320 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 12020320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19155216960).

12020320320 is an abundant number, since it is smaller than the sum of its proper divisors (26290113600).

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

12020320320 is a wasteful number, since it uses less digits than its factorization.

12020320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47892 (or 47882 counting only the distinct ones).

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

Adding to 12020320320 its reverse (2302302021), we get a palindrome (14322622341).

The spelling of 12020320320 in words is "twelve billion, twenty million, three hundred twenty thousand, three hundred twenty".