22021323324 has 192 divisors, whose sum is σ = 69092352000. Its totient is φ = 5272001280.

The previous prime is 22021323287. The next prime is 22021323329. The reversal of 22021323324 is 42332312022.

It is a junction number, because it is equal to n+sod(n) for n = 22021323294 and 22021323303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021323329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14689927 + ... + 14691425.

It is an arithmetic number, because the mean of its divisors is an integer number (359856000).

Almost surely, 2^22021323324 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 22021323324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34546176000).

22021323324 is an abundant number, since it is smaller than the sum of its proper divisors (47071028676).

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

22021323324 is a wasteful number, since it uses less digits than its factorization.

22021323324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760 (or 2758 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 22021323324 its reverse (42332312022), we get a palindrome (64353635346).

The spelling of 22021323324 in words is "twenty-two billion, twenty-one million, three hundred twenty-three thousand, three hundred twenty-four".