22231223250 has 128 divisors (see below), whose sum is σ = 56817745920. Its totient is φ = 5787057600.

The previous prime is 22231223243. The next prime is 22231223281. The reversal of 22231223250 is 5232213222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22231223250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21396231 + ... + 21397269.

It is an arithmetic number, because the mean of its divisors is an integer number (443888640).

Almost surely, 2^22231223250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22231223250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28408872960).

22231223250 is an abundant number, since it is smaller than the sum of its proper divisors (34586522670).

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

22231223250 is a wasteful number, since it uses less digits than its factorization.

22231223250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 22231223250 its reverse (5232213222), we get a palindrome (27463436472).

The spelling of 22231223250 in words is "twenty-two billion, two hundred thirty-one million, two hundred twenty-three thousand, two hundred fifty".