12424221200 has 30 divisors (see below), whose sum is σ = 29849192394. Its totient is φ = 4969688320.

The previous prime is 12424221193. The next prime is 12424221241. The reversal of 12424221200 is 212242421.

It can be written as a sum of positive squares in 3 ways, for example, as 342694144 + 12081527056 = 18512^2 + 109916^2 .

It is a super-2 number, since 2×12424221200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15529877 + ... + 15530676.

Almost surely, 2^12424221200 is an apocalyptic number.

12424221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12424221200 is an abundant number, since it is smaller than the sum of its proper divisors (17424971194).

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

12424221200 is a wasteful number, since it uses less digits than its factorization.

12424221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31060571 (or 31060560 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12424221200 its reverse (212242421), we get a palindrome (12636463621).

The spelling of 12424221200 in words is "twelve billion, four hundred twenty-four million, two hundred twenty-one thousand, two hundred".