21332300024 has 64 divisors (see below), whose sum is σ = 46399953600. Its totient is φ = 9005174784.

The previous prime is 21332299999. The next prime is 21332300053. The reversal of 21332300024 is 42000323312.

It is a junction number, because it is equal to n+sod(n) for n = 21332299969 and 21332300005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3500372 + ... + 3506460.

It is an arithmetic number, because the mean of its divisors is an integer number (724999275).

Almost surely, 2^21332300024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21332300024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23199976800).

21332300024 is an abundant number, since it is smaller than the sum of its proper divisors (25067653576).

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

21332300024 is a wasteful number, since it uses less digits than its factorization.

21332300024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7032 (or 7028 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21332300024 its reverse (42000323312), we get a palindrome (63332623336).

The spelling of 21332300024 in words is "twenty-one billion, three hundred thirty-two million, three hundred thousand, twenty-four".