22228013472 has 192 divisors, whose sum is σ = 68318611200. Its totient is φ = 6325337088.

The previous prime is 22228013447. The next prime is 22228013491. The reversal of 22228013472 is 27431082222.

It is a super-2 number, since 2×22228013472² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9119838 + ... + 9122274.

It is an arithmetic number, because the mean of its divisors is an integer number (355826100).

Almost surely, 2^22228013472 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 22228013472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34159305600).

22228013472 is an abundant number, since it is smaller than the sum of its proper divisors (46090597728).

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

22228013472 is a wasteful number, since it uses less digits than its factorization.

22228013472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748 (or 2726 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

Adding to 22228013472 its reverse (27431082222), we get a palindrome (49659095694).

The spelling of 22228013472 in words is "twenty-two billion, two hundred twenty-eight million, thirteen thousand, four hundred seventy-two".