12421241144 has 64 divisors (see below), whose sum is σ = 25719603840. Its totient is φ = 5588674560.

The previous prime is 12421241113. The next prime is 12421241219. The reversal of 12421241144 is 44114212421.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708209 + ... + 725535.

It is an arithmetic number, because the mean of its divisors is an integer number (401868810).

Almost surely, 2^12421241144 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 12421241144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12859801920).

12421241144 is an abundant number, since it is smaller than the sum of its proper divisors (13298362696).

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

12421241144 is a wasteful number, since it uses less digits than its factorization.

12421241144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17520 (or 17516 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

Adding to 12421241144 its reverse (44114212421), we get a palindrome (56535453565).

The spelling of 12421241144 in words is "twelve billion, four hundred twenty-one million, two hundred forty-one thousand, one hundred forty-four".