21322122432 has 112 divisors (see below), whose sum is σ = 64328296032. Its totient is φ = 6174720000.

The previous prime is 21322122407. The next prime is 21322122433. The reversal of 21322122432 is 23422122312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21322122433) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 208819 + ... + 293682.

It is an arithmetic number, because the mean of its divisors is an integer number (574359786).

Almost surely, 2^21322122432 is an apocalyptic number.

It is an amenable number.

21322122432 is an abundant number, since it is smaller than the sum of its proper divisors (43006173600).

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

21322122432 is a wasteful number, since it uses less digits than its factorization.

21322122432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502546 (or 502536 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

Adding to 21322122432 its reverse (23422122312), we get a palindrome (44744244744).

The spelling of 21322122432 in words is "twenty-one billion, three hundred twenty-two million, one hundred twenty-two thousand, four hundred thirty-two".