12751242112 has 128 divisors (see below), whose sum is σ = 29618841600. Its totient is φ = 5355417600.

The previous prime is 12751242107. The next prime is 12751242193. The reversal of 12751242112 is 21124215721.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10687788 + ... + 10688980.

It is an arithmetic number, because the mean of its divisors is an integer number (231397200).

Almost surely, 2^12751242112 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 12751242112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14809420800).

12751242112 is an abundant number, since it is smaller than the sum of its proper divisors (16867599488).

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

12751242112 is a wasteful number, since it uses less digits than its factorization.

12751242112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444 (or 1432 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

Adding to 12751242112 its reverse (21124215721), we get a palindrome (33875457833).

The spelling of 12751242112 in words is "twelve billion, seven hundred fifty-one million, two hundred forty-two thousand, one hundred twelve".