22201230312 has 96 divisors (see below), whose sum is σ = 60652126080. Its totient is φ = 7336101120.

The previous prime is 22201230307. The next prime is 22201230319. The reversal of 22201230312 is 21303210222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22201230319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10760593 + ... + 10762655.

It is an arithmetic number, because the mean of its divisors is an integer number (631792980).

Almost surely, 2^22201230312 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 22201230312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30326063040).

22201230312 is an abundant number, since it is smaller than the sum of its proper divisors (38450895768).

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

22201230312 is a wasteful number, since it uses less digits than its factorization.

22201230312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303 (or 3296 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22201230312 its reverse (21303210222), we get a palindrome (43504440534).

The spelling of 22201230312 in words is "twenty-two billion, two hundred one million, two hundred thirty thousand, three hundred twelve".