22021122304 has 72 divisors (see below), whose sum is σ = 46481541120. Its totient is φ = 10395340800.

The previous prime is 22021122301. The next prime is 22021122313. The reversal of 22021122304 is 40322112022.

It is not an unprimeable number, because it can be changed into a prime (22021122301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291537 + ... + 359215.

It is an arithmetic number, because the mean of its divisors is an integer number (645576960).

Almost surely, 2^22021122304 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 22021122304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23240770560).

22021122304 is an abundant number, since it is smaller than the sum of its proper divisors (24460418816).

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

22021122304 is an equidigital number, since it uses as much as digits as its factorization.

22021122304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67767 (or 67753 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22021122304 its reverse (40322112022), we get a palindrome (62343234326).

The spelling of 22021122304 in words is "twenty-two billion, twenty-one million, one hundred twenty-two thousand, three hundred four".