22021330312 has 16 divisors (see below), whose sum is σ = 43085211840. Its totient is φ = 10531940496.

The previous prime is 22021330291. The next prime is 22021330313. The reversal of 22021330312 is 21303312022.

It is a self number, because there is not a number n which added to its sum of digits gives 22021330312.

It is not an unprimeable number, because it can be changed into a prime (22021330313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59840388 + ... + 59840755.

It is an arithmetic number, because the mean of its divisors is an integer number (2692825740).

Almost surely, 2^22021330312 is an apocalyptic number.

It is an amenable number.

22021330312 is a deficient number, since it is larger than the sum of its proper divisors (21063881528).

22021330312 is a wasteful number, since it uses less digits than its factorization.

22021330312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119681172 (or 119681168 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 22021330312 its reverse (21303312022), we get a palindrome (43324642334).

The spelling of 22021330312 in words is "twenty-two billion, twenty-one million, three hundred thirty thousand, three hundred twelve".