21330322232 has 16 divisors (see below), whose sum is σ = 40009136640. Its totient is φ = 10661219136.

The previous prime is 21330322163. The next prime is 21330322249. The reversal of 21330322232 is 23222303312.

It is a junction number, because it is equal to n+sod(n) for n = 21330322198 and 21330322207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469688 + ... + 513095.

It is an arithmetic number, because the mean of its divisors is an integer number (2500571040).

Almost surely, 2^21330322232 is an apocalyptic number.

It is an amenable number.

21330322232 is a deficient number, since it is larger than the sum of its proper divisors (18678814408).

21330322232 is a wasteful number, since it uses less digits than its factorization.

21330322232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985502 (or 985498 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21330322232 its reverse (23222303312), we get a palindrome (44552625544).

The spelling of 21330322232 in words is "twenty-one billion, three hundred thirty million, three hundred twenty-two thousand, two hundred thirty-two".