22000111128 has 72 divisors (see below), whose sum is σ = 63294785580. Its totient is φ = 6901989120.

The previous prime is 22000111079. The next prime is 22000111129. The reversal of 22000111128 is 82111100022.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a self number, because there is not a number n which added to its sum of digits gives 22000111128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000111129) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 507838 + ... + 549453.

Almost surely, 2^22000111128 is an apocalyptic number.

It is an amenable number.

22000111128 is an abundant number, since it is smaller than the sum of its proper divisors (41294674452).

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

22000111128 is a wasteful number, since it uses less digits than its factorization.

22000111128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057337 (or 1057313 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The spelling of 22000111128 in words is "twenty-two billion, one hundred eleven thousand, one hundred twenty-eight".