12001203320 has 64 divisors (see below), whose sum is σ = 28448064000. Its totient is φ = 4543959168.

The previous prime is 12001203287. The next prime is 12001203323. The reversal of 12001203320 is 2330210021.

It is a happy number.

It is a super-2 number, since 2×12001203320² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12001203295 and 12001203304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001203323) 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, 984221 + ... + 996339.

It is an arithmetic number, because the mean of its divisors is an integer number (444501000).

Almost surely, 2^12001203320 is an apocalyptic number.

12001203320 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 12001203320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14224032000).

12001203320 is an abundant number, since it is smaller than the sum of its proper divisors (16446860680).

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

12001203320 is a wasteful number, since it uses less digits than its factorization.

12001203320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13452 (or 13448 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 12001203320 its reverse (2330210021), we get a palindrome (14331413341).

The spelling of 12001203320 in words is "twelve billion, one million, two hundred three thousand, three hundred twenty".