12222144320 has 56 divisors (see below), whose sum is σ = 30042843648. Its totient is φ = 4731148800.

The previous prime is 12222144313. The next prime is 12222144343. The reversal of 12222144320 is 2344122221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606116 + ... + 625955.

Almost surely, 2^12222144320 is an apocalyptic number.

12222144320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222144320 is an abundant number, since it is smaller than the sum of its proper divisors (17820699328).

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

12222144320 is a wasteful number, since it uses less digits than its factorization.

12222144320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232119 (or 1232109 counting only the distinct ones).

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

Adding to 12222144320 its reverse (2344122221), we get a palindrome (14566266541).

The spelling of 12222144320 in words is "twelve billion, two hundred twenty-two million, one hundred forty-four thousand, three hundred twenty".