22421033430 has 128 divisors (see below), whose sum is σ = 55552366080. Its totient is φ = 5789414400.

The previous prime is 22421033417. The next prime is 22421033431. The reversal of 22421033430 is 3433012422.

22421033430 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 22421033430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22421033431) 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, 36338482 + ... + 36339098.

It is an arithmetic number, because the mean of its divisors is an integer number (434002860).

Almost surely, 2^22421033430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22421033430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27776183040).

22421033430 is an abundant number, since it is smaller than the sum of its proper divisors (33131332650).

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

22421033430 is a wasteful number, since it uses less digits than its factorization.

22421033430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

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

Adding to 22421033430 its reverse (3433012422), we get a palindrome (25854045852).

The spelling of 22421033430 in words is "twenty-two billion, four hundred twenty-one million, thirty-three thousand, four hundred thirty".