12012221200320 has 168 divisors, whose sum is σ = 45073130122800. Its totient is φ = 2912053616640.

The previous prime is 12012221200279. The next prime is 12012221200351. The reversal of 12012221200320 is 2300212221021.

12012221200320 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 222 + 120 + 0 + 320 = 666.

12012221200320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12012221200293 and 12012221200302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189555145 + ... + 189618504.

Almost surely, 2^{12012221200320} is an apocalyptic number.

12012221200320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012221200320 is an abundant number, since it is smaller than the sum of its proper divisors (33060908922480).

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

12012221200320 is a wasteful number, since it uses less digits than its factorization.

12012221200320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379173683 (or 379173670 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12012221200320 its reverse (2300212221021), we get a palindrome (14312433421341).

The spelling of 12012221200320 in words is "twelve trillion, twelve billion, two hundred twenty-one million, two hundred thousand, three hundred twenty".