12422344240 has 40 divisors (see below), whose sum is σ = 28889713440. Its totient is φ = 4967602176.

The previous prime is 12422344223. The next prime is 12422344247. The reversal of 12422344240 is 4244322421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×12422344240² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12422344199 and 12422344208.

It is not an unprimeable number, because it can be changed into a prime (12422344247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311517 + ... + 349123.

It is an arithmetic number, because the mean of its divisors is an integer number (722242836).

Almost surely, 2^12422344240 is an apocalyptic number.

12422344240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12422344240 is an abundant number, since it is smaller than the sum of its proper divisors (16467369200).

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

12422344240 is a wasteful number, since it uses less digits than its factorization.

12422344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41749 (or 41743 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 12422344240 its reverse (4244322421), we get a palindrome (16666666661).

The spelling of 12422344240 in words is "twelve billion, four hundred twenty-two million, three hundred forty-four thousand, two hundred forty".