13221131340224 has 28 divisors (see below), whose sum is σ = 26266439566584. Its totient is φ = 6602815858944.

The previous prime is 13221131340191. The next prime is 13221131340293. The reversal of 13221131340224 is 42204313112231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121035782 + ... + 121144965.

It is an arithmetic number, because the mean of its divisors is an integer number (938087127378).

Almost surely, 2^{13221131340224} is an apocalyptic number.

It is an amenable number.

13221131340224 is a deficient number, since it is larger than the sum of its proper divisors (13045308226360).

13221131340224 is an equidigital number, since it uses as much as digits as its factorization.

13221131340224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242181612 (or 242181602 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 13221131340224 its reverse (42204313112231), we get a palindrome (55425444452455).

The spelling of 13221131340224 in words is "thirteen trillion, two hundred twenty-one billion, one hundred thirty-one million, three hundred forty thousand, two hundred twenty-four".