21330303020 has 24 divisors (see below), whose sum is σ = 48239301264. Its totient is φ = 7875804096.

The previous prime is 21330302999. The next prime is 21330303061. The reversal of 21330303020 is 2030303312.

It is a super-2 number, since 2×21330303020² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21330303020.

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 7 ways as a sum of consecutive naturals, for example, 41019554 + ... + 41020073.

It is an arithmetic number, because the mean of its divisors is an integer number (2009970886).

Almost surely, 2^21330303020 is an apocalyptic number.

21330303020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21330303020 is an abundant number, since it is smaller than the sum of its proper divisors (26908998244).

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

21330303020 is a wasteful number, since it uses less digits than its factorization.

21330303020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82039649 (or 82039647 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 21330303020 its reverse (2030303312), we get a palindrome (23360606332).

The spelling of 21330303020 in words is "twenty-one billion, three hundred thirty million, three hundred three thousand, twenty".