213221311424 has 56 divisors (see below), whose sum is σ = 461749950768. Its totient is φ = 96882186240.

The previous prime is 213221311361. The next prime is 213221311441. The reversal of 213221311424 is 424113122312.

It is a happy number.

213221311424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213221311393 and 213221311402.

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 7 ways as a sum of consecutive naturals, for example, 1854134 + ... + 1965770.

Almost surely, 2^213221311424 is an apocalyptic number.

It is an amenable number.

213221311424 is an abundant number, since it is smaller than the sum of its proper divisors (248528639344).

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

213221311424 is a wasteful number, since it uses less digits than its factorization.

213221311424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114373 (or 114363 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

Adding to 213221311424 its reverse (424113122312), we get a palindrome (637334433736).

The spelling of 213221311424 in words is "two hundred thirteen billion, two hundred twenty-one million, three hundred eleven thousand, four hundred twenty-four".