12444121140 has 48 divisors (see below), whose sum is σ = 38011135680. Its totient is φ = 3016756480.

The previous prime is 12444121139. The next prime is 12444121169. The reversal of 12444121140 is 4112144421.

12444121140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12444121140.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 9426705 + ... + 9428024.

It is an arithmetic number, because the mean of its divisors is an integer number (791898660).

Almost surely, 2^12444121140 is an apocalyptic number.

12444121140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12444121140 is an abundant number, since it is smaller than the sum of its proper divisors (25567014540).

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

12444121140 is a wasteful number, since it uses less digits than its factorization.

12444121140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18854752 (or 18854750 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 12444121140 its reverse (4112144421), we get a palindrome (16556265561).

The spelling of 12444121140 in words is "twelve billion, four hundred forty-four million, one hundred twenty-one thousand, one hundred forty".