22521342032 has 80 divisors (see below), whose sum is σ = 52254250752. Its totient is φ = 9193789440.

The previous prime is 22521342013. The next prime is 22521342047. The reversal of 22521342032 is 23024312522.

It is a junction number, because it is equal to n+sod(n) for n = 22521341992 and 22521342010.

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, 602678 + ... + 638954.

Almost surely, 2^22521342032 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 22521342032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26127125376).

22521342032 is an abundant number, since it is smaller than the sum of its proper divisors (29732908720).

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

22521342032 is a wasteful number, since it uses less digits than its factorization.

22521342032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36556 (or 36550 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 22521342032 its reverse (23024312522), we get a palindrome (45545654554).

The spelling of 22521342032 in words is "twenty-two billion, five hundred twenty-one million, three hundred forty-two thousand, thirty-two".