12321120412 has 24 divisors (see below), whose sum is σ = 22601546352. Its totient is φ = 5870524800.

The previous prime is 12321120389. The next prime is 12321120433. The reversal of 12321120412 is 21402112321.

12321120412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12321120412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866539 + ... + 880642.

It is an arithmetic number, because the mean of its divisors is an integer number (941731098).

Almost surely, 2^12321120412 is an apocalyptic number.

It is an amenable number.

12321120412 is a deficient number, since it is larger than the sum of its proper divisors (10280425940).

12321120412 is a wasteful number, since it uses less digits than its factorization.

12321120412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747269 (or 1747267 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12321120412 its reverse (21402112321), we get a palindrome (33723232733).

The spelling of 12321120412 in words is "twelve billion, three hundred twenty-one million, one hundred twenty thousand, four hundred twelve".