21323200332 has 96 divisors (see below), whose sum is σ = 58762461184. Its totient is φ = 5889153600.

The previous prime is 21323200309. The next prime is 21323200333. The reversal of 21323200332 is 23300232312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 21323200299 and 21323200308.

It is not an unprimeable number, because it can be changed into a prime (21323200333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2576433 + ... + 2584695.

Almost surely, 2^21323200332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21323200332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29381230592).

21323200332 is an abundant number, since it is smaller than the sum of its proper divisors (37439260852).

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

21323200332 is a wasteful number, since it uses less digits than its factorization.

21323200332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299 (or 9297 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21323200332 its reverse (23300232312), we get a palindrome (44623432644).

The spelling of 21323200332 in words is "twenty-one billion, three hundred twenty-three million, two hundred thousand, three hundred thirty-two".