21332024320 has 88 divisors (see below), whose sum is σ = 54182190384. Its totient is φ = 8030846976.

The previous prime is 21332024309. The next prime is 21332024321. The reversal of 21332024320 is 2342023312.

It is a junction number, because it is equal to n+sod(n) for n = 21332024291 and 21332024300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332024321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35502 + ... + 209581.

Almost surely, 2^21332024320 is an apocalyptic number.

21332024320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21332024320 is an abundant number, since it is smaller than the sum of its proper divisors (32850166064).

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

21332024320 is a wasteful number, since it uses less digits than its factorization.

21332024320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245125 (or 245107 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21332024320 its reverse (2342023312), we get a palindrome (23674047632).

The spelling of 21332024320 in words is "twenty-one billion, three hundred thirty-two million, twenty-four thousand, three hundred twenty".