21300103320 has 128 divisors (see below), whose sum is σ = 65512592640. Its totient is φ = 5537226240.

The previous prime is 21300103313. The next prime is 21300103351. The reversal of 21300103320 is 2330100312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21300103320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2870415 + ... + 2877825.

It is an arithmetic number, because the mean of its divisors is an integer number (511817130).

Almost surely, 2^21300103320 is an apocalyptic number.

21300103320 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 21300103320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32756296320).

21300103320 is an abundant number, since it is smaller than the sum of its proper divisors (44212489320).

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

21300103320 is a wasteful number, since it uses less digits than its factorization.

21300103320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8025 (or 8021 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21300103320 its reverse (2330100312), we get a palindrome (23630203632).

The spelling of 21300103320 in words is "twenty-one billion, three hundred million, one hundred three thousand, three hundred twenty".