12031321330120 has 128 divisors (see below), whose sum is σ = 27895452300000. Its totient is φ = 4666762985472.

The previous prime is 12031321330103. The next prime is 12031321330163. The reversal of 12031321330120 is 2103312313021.

It can be written as a sum of positive squares in 16 ways, for example, as 23835036996 + 12007486293124 = 154386^2 + 3465182^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12031321330091 and 12031321330100.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 617329336 + ... + 617348824.

Almost surely, 2^{12031321330120} is an apocalyptic number.

12031321330120 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 12031321330120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13947726150000).

12031321330120 is an abundant number, since it is smaller than the sum of its proper divisors (15864130969880).

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

12031321330120 is a wasteful number, since it uses less digits than its factorization.

12031321330120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20915 (or 20911 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 12031321330120 its reverse (2103312313021), we get a palindrome (14134633643141).

The spelling of 12031321330120 in words is "twelve trillion, thirty-one billion, three hundred twenty-one million, three hundred thirty thousand, one hundred twenty".