22113445530 has 256 divisors, whose sum is σ = 61511933952. Its totient is φ = 5038848000.

The previous prime is 22113445511. The next prime is 22113445531. The reversal of 22113445530 is 3554431122.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (22113445531) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 81599295 + ... + 81599565.

It is an arithmetic number, because the mean of its divisors is an integer number (240280992).

Almost surely, 2^22113445530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22113445530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30755966976).

22113445530 is an abundant number, since it is smaller than the sum of its proper divisors (39398488422).

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

22113445530 is a wasteful number, since it uses less digits than its factorization.

22113445530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 22113445530 its reverse (3554431122), we get a palindrome (25667876652).

The spelling of 22113445530 in words is "twenty-two billion, one hundred thirteen million, four hundred forty-five thousand, five hundred thirty".