21330322132 has 24 divisors (see below), whose sum is σ = 43360002560. Its totient is φ = 8991704160.

The previous prime is 21330322109. The next prime is 21330322157. The reversal of 21330322132 is 23122303312.

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 7 ways as a sum of consecutive naturals, for example, 6242532 + ... + 6245947.

Almost surely, 2^21330322132 is an apocalyptic number.

It is an amenable number.

21330322132 is an abundant number, since it is smaller than the sum of its proper divisors (22029680428).

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

21330322132 is a wasteful number, since it uses less digits than its factorization.

21330322132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12488551 (or 12488549 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21330322132 its reverse (23122303312), we get a palindrome (44452625444).

The spelling of 21330322132 in words is "twenty-one billion, three hundred thirty million, three hundred twenty-two thousand, one hundred thirty-two".