22256775212 has 12 divisors (see below), whose sum is σ = 44513550480. Its totient is φ = 9538617936.

The previous prime is 22256775209. The next prime is 22256775251. The reversal of 22256775212 is 21257765222.

22256775212 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 22256775212.

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 3 ways as a sum of consecutive naturals, for example, 397442387 + ... + 397442442.

It is an arithmetic number, because the mean of its divisors is an integer number (3709462540).

Almost surely, 2^22256775212 is an apocalyptic number.

It is an amenable number.

22256775212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22256775212 is a wasteful number, since it uses less digits than its factorization.

22256775212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794884840 (or 794884838 counting only the distinct ones).

The product of its digits is 235200, while the sum is 41.

The spelling of 22256775212 in words is "twenty-two billion, two hundred fifty-six million, seven hundred seventy-five thousand, two hundred twelve".