21330222303320 has 64 divisors (see below), whose sum is σ = 54889267783680. Its totient is φ = 7307869113216.

The previous prime is 21330222303283. The next prime is 21330222303389. The reversal of 21330222303320 is 2330322203312.

It is a self number, because there is not a number n which added to its sum of digits gives 21330222303320.

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 15 ways as a sum of consecutive naturals, for example, 27480944 + ... + 28246463.

It is an arithmetic number, because the mean of its divisors is an integer number (857644809120).

Almost surely, 2^{21330222303320} is an apocalyptic number.

21330222303320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21330222303320 is an abundant number, since it is smaller than the sum of its proper divisors (33559045480360).

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

21330222303320 is a wasteful number, since it uses less digits than its factorization.

21330222303320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55728792 (or 55728788 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 21330222303320 its reverse (2330322203312), we get a palindrome (23660544506632).

The spelling of 21330222303320 in words is "twenty-one trillion, three hundred thirty billion, two hundred twenty-two million, three hundred three thousand, three hundred twenty".