12224143220 has 48 divisors (see below), whose sum is σ = 26571767040. Its totient is φ = 4718227584.

The previous prime is 12224143189. The next prime is 12224143223. The reversal of 12224143220 is 2234142221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224143223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147157 + ... + 1157763.

It is an arithmetic number, because the mean of its divisors is an integer number (553578480).

Almost surely, 2^12224143220 is an apocalyptic number.

12224143220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12224143220 is an abundant number, since it is smaller than the sum of its proper divisors (14347623820).

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

12224143220 is a wasteful number, since it uses less digits than its factorization.

12224143220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12632 (or 12630 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12224143220 its reverse (2234142221), we get a palindrome (14458285441).

Subtracting from 12224143220 its reverse (2234142221), we obtain a palindrome (9990000999).

The spelling of 12224143220 in words is "twelve billion, two hundred twenty-four million, one hundred forty-three thousand, two hundred twenty".