12012143204432 has 80 divisors (see below), whose sum is σ = 26894797372800. Its totient is φ = 5090982541824.

The previous prime is 12012143204387. The next prime is 12012143204437. The reversal of 12012143204432 is 23440234121021.

It is a junction number, because it is equal to n+sod(n) for n = 12012143204395 and 12012143204404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012143204437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2202698 + ... + 5373654.

It is an arithmetic number, because the mean of its divisors is an integer number (336184967160).

Almost surely, 2^{12012143204432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12012143204432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13447398686400).

12012143204432 is an abundant number, since it is smaller than the sum of its proper divisors (14882654168368).

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

12012143204432 is a wasteful number, since it uses less digits than its factorization.

12012143204432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171348 (or 3171342 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 12012143204432 its reverse (23440234121021), we get a palindrome (35452377325453).

The spelling of 12012143204432 in words is "twelve trillion, twelve billion, one hundred forty-three million, two hundred four thousand, four hundred thirty-two".