12521443224 has 16 divisors (see below), whose sum is σ = 31303608120. Its totient is φ = 4173814400.

The previous prime is 12521443219. The next prime is 12521443247. The reversal of 12521443224 is 42234412521.

It is a happy number.

12521443224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12521443224³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12521443191 and 12521443200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260863377 + ... + 260863424.

Almost surely, 2^12521443224 is an apocalyptic number.

It is an amenable number.

12521443224 is an abundant number, since it is smaller than the sum of its proper divisors (18782164896).

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

12521443224 is a wasteful number, since it uses less digits than its factorization.

12521443224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521726810 (or 521726806 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

Adding to 12521443224 its reverse (42234412521), we get a palindrome (54755855745).

The spelling of 12521443224 in words is "twelve billion, five hundred twenty-one million, four hundred forty-three thousand, two hundred twenty-four".