22120323312 has 80 divisors (see below), whose sum is σ = 58890293280. Its totient is φ = 7149505536.

The previous prime is 22120323307. The next prime is 22120323331. The reversal of 22120323312 is 21332302122.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 499114 + ... + 541622.

It is an arithmetic number, because the mean of its divisors is an integer number (736128666).

Almost surely, 2^22120323312 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 22120323312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29445146640).

22120323312 is an abundant number, since it is smaller than the sum of its proper divisors (36769969968).

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

22120323312 is a wasteful number, since it uses less digits than its factorization.

22120323312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42850 (or 42844 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22120323312 its reverse (21332302122), we get a palindrome (43452625434).

The spelling of 22120323312 in words is "twenty-two billion, one hundred twenty million, three hundred twenty-three thousand, three hundred twelve".