22032123312 has 20 divisors (see below), whose sum is σ = 56916318680. Its totient is φ = 7344041088.

The previous prime is 22032123293. The next prime is 22032123313. The reversal of 22032123312 is 21332123022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22032123313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229501237 + ... + 229501332.

It is an arithmetic number, because the mean of its divisors is an integer number (2845815934).

Almost surely, 2^22032123312 is an apocalyptic number.

It is an amenable number.

22032123312 is an abundant number, since it is smaller than the sum of its proper divisors (34884195368).

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

22032123312 is a wasteful number, since it uses less digits than its factorization.

22032123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459002580 (or 459002574 counting only the distinct ones).

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

Adding to 22032123312 its reverse (21332123022), we get a palindrome (43364246334).

The spelling of 22032123312 in words is "twenty-two billion, thirty-two million, one hundred twenty-three thousand, three hundred twelve".