12242272240 has 80 divisors (see below), whose sum is σ = 31098232800. Its totient is φ = 4444943360.

The previous prime is 12242272183. The next prime is 12242272291. The reversal of 12242272240 is 4227224221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 12242272199 and 12242272208.

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, 585486 + ... + 606034.

It is an arithmetic number, because the mean of its divisors is an integer number (388727910).

Almost surely, 2^12242272240 is an apocalyptic number.

12242272240 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 12242272240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15549116400).

12242272240 is an abundant number, since it is smaller than the sum of its proper divisors (18855960560).

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

12242272240 is a wasteful number, since it uses less digits than its factorization.

12242272240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250 (or 21244 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 28.

Adding to 12242272240 its reverse (4227224221), we get a palindrome (16469496461).

It can be divided in two parts, 12242 and 272240, that added together give a palindrome (284482).

The spelling of 12242272240 in words is "twelve billion, two hundred forty-two million, two hundred seventy-two thousand, two hundred forty".