12021220320120 has 192 divisors, whose sum is σ = 42697216355040. Its totient is φ = 2909002675200.

The previous prime is 12021220320103. The next prime is 12021220320211. The reversal of 12021220320120 is 2102302212021.

12021220320120 is a `hidden beast` number, since 1 + 2 + 0 + 2 + 1 + 220 + 320 + 120 = 666.

12021220320120 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 = 12021220320093 and 12021220320102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 519291 + ... + 4930730.

Almost surely, 2^{12021220320120} is an apocalyptic number.

12021220320120 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 12021220320120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21348608177520).

12021220320120 is an abundant number, since it is smaller than the sum of its proper divisors (30675996034920).

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

12021220320120 is a wasteful number, since it uses less digits than its factorization.

12021220320120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450606 (or 5450599 counting only the distinct ones).

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

Adding to 12021220320120 its reverse (2102302212021), we get a palindrome (14123522532141).

The spelling of 12021220320120 in words is "twelve trillion, twenty-one billion, two hundred twenty million, three hundred twenty thousand, one hundred twenty".