12012110122012 has 144 divisors (see below), whose sum is σ = 28442955378880. Its totient is φ = 4319298846720.

The previous prime is 12012110121997. The next prime is 12012110122013. The reversal of 12012110122012 is 21022101121021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012110122013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 300756508 + ... + 300796444.

Almost surely, 2^{12012110122012} 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 12012110122012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14221477689440).

12012110122012 is an abundant number, since it is smaller than the sum of its proper divisors (16430845256868).

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

12012110122012 is a wasteful number, since it uses less digits than its factorization.

12012110122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46812 (or 46799 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12012110122012 its reverse (21022101121021), we get a palindrome (33034211243033).

Subtracting 12012110122012 from its reverse (21022101121021), we obtain a palindrome (9009990999009).

The spelling of 12012110122012 in words is "twelve trillion, twelve billion, one hundred ten million, one hundred twenty-two thousand, twelve".