12012123240444 has 96 divisors (see below), whose sum is σ = 29778763069440. Its totient is φ = 3755601783808.

The previous prime is 12012123240437. The next prime is 12012123240589. The reversal of 12012123240444 is 44404232121021.

It is a super-2 number, since 2×12012123240444² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 115880782 + ... + 115984394.

It is an arithmetic number, because the mean of its divisors is an integer number (310195448640).

Almost surely, 2^{12012123240444} 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 12012123240444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14889381534720).

12012123240444 is an abundant number, since it is smaller than the sum of its proper divisors (17766639828996).

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

12012123240444 is a wasteful number, since it uses less digits than its factorization.

12012123240444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105579 (or 105577 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 12012123240444 its reverse (44404232121021), we get a palindrome (56416355361465).

The spelling of 12012123240444 in words is "twelve trillion, twelve billion, one hundred twenty-three million, two hundred forty thousand, four hundred forty-four".