12321024012 has 72 divisors (see below), whose sum is σ = 35764397760. Its totient is φ = 3537133920.

The previous prime is 12321023969. The next prime is 12321024041. The reversal of 12321024012 is 21042012321.

It is a happy number.

12321024012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12321024012² (a number of 21 digits) contains 22 as substring.

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

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 23 ways as a sum of consecutive naturals, for example, 811258 + ... + 826305.

Almost surely, 2^12321024012 is an apocalyptic number.

12321024012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12321024012 is an abundant number, since it is smaller than the sum of its proper divisors (23443373748).

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

12321024012 is a wasteful number, since it uses less digits than its factorization.

12321024012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637603 (or 1637598 counting only the distinct ones).

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

Adding to 12321024012 its reverse (21042012321), we get a palindrome (33363036333).

The spelling of 12321024012 in words is "twelve billion, three hundred twenty-one million, twenty-four thousand, twelve".