21332300020 has 12 divisors (see below), whose sum is σ = 44797830084. Its totient is φ = 8532920000.

The previous prime is 21332299999. The next prime is 21332300053. The reversal of 21332300020 is 2000323312.

It can be written as a sum of positive squares in 2 ways, for example, as 11355886096 + 9976413924 = 106564^2 + 99882^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21332299967 and 21332300003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533307481 + ... + 533307520.

It is an arithmetic number, because the mean of its divisors is an integer number (3733152507).

Almost surely, 2^21332300020 is an apocalyptic number.

21332300020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21332300020 is an abundant number, since it is smaller than the sum of its proper divisors (23465530064).

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

21332300020 is a wasteful number, since it uses less digits than its factorization.

21332300020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066615010 (or 1066615008 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21332300020 its reverse (2000323312), we get a palindrome (23332623332).

The spelling of 21332300020 in words is "twenty-one billion, three hundred thirty-two million, three hundred thousand, twenty".