12422144240 has 160 divisors (see below), whose sum is σ = 32399372736. Its totient is φ = 4390830080.

The previous prime is 12422144219. The next prime is 12422144243. The reversal of 12422144240 is 4244122421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12422144243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5269142 + ... + 5271498.

Almost surely, 2^12422144240 is an apocalyptic number.

12422144240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12422144240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16199686368).

12422144240 is an abundant number, since it is smaller than the sum of its proper divisors (19977228496).

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

12422144240 is a wasteful number, since it uses less digits than its factorization.

12422144240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547 (or 2541 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 12422144240 its reverse (4244122421), we get a palindrome (16666266661).

The spelling of 12422144240 in words is "twelve billion, four hundred twenty-two million, one hundred forty-four thousand, two hundred forty".