21320313333300 has 216 divisors, whose sum is σ = 67000461196032. Its totient is φ = 5670695520000.

The previous prime is 21320313333289. The next prime is 21320313333301. The reversal of 21320313333300 is 333331302312.

21320313333300 is a `hidden beast` number, since 2 + 1 + 3 + 20 + 3 + 1 + 3 + 333 + 300 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320313333301) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2851449162 + ... + 2851456638.

It is an arithmetic number, because the mean of its divisors is an integer number (310187320352).

Almost surely, 2^{21320313333300} is an apocalyptic number.

21320313333300 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 21320313333300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33500230598016).

21320313333300 is an abundant number, since it is smaller than the sum of its proper divisors (45680147862732).

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

21320313333300 is a wasteful number, since it uses less digits than its factorization.

21320313333300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15279 (or 15269 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 27.

Adding to 21320313333300 its reverse (333331302312), we get a palindrome (21653644635612).

The spelling of 21320313333300 in words is "twenty-one trillion, three hundred twenty billion, three hundred thirteen million, three hundred thirty-three thousand, three hundred".