21331100300 has 72 divisors (see below), whose sum is σ = 47420142000. Its totient is φ = 8324305920.

The previous prime is 21331100293. The next prime is 21331100321. The reversal of 21331100300 is 300113312.

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 23 ways as a sum of consecutive naturals, for example, 4508336 + ... + 4513064.

Almost surely, 2^21331100300 is an apocalyptic number.

21331100300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21331100300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23710071000).

21331100300 is an abundant number, since it is smaller than the sum of its proper divisors (26089041700).

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

21331100300 is a wasteful number, since it uses less digits than its factorization.

21331100300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5835 (or 5828 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21331100300 its reverse (300113312), we get a palindrome (21631213612).

The spelling of 21331100300 in words is "twenty-one billion, three hundred thirty-one million, one hundred thousand, three hundred".