9111111112 has 8 divisors (see below), whose sum is σ = 17083333350. Its totient is φ = 4555555552.

The previous prime is 9111111071. The next prime is 9111111127. The reversal of 9111111112 is 2111111119.

It can be written as a sum of positive squares in only one way, i.e., 5860514916 + 3250596196 = 76554^2 + 57014^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 9111111112.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 569444437 + ... + 569444452.

Almost surely, 2^9111111112 is an apocalyptic number.

It is an amenable number.

9111111112 is a deficient number, since it is larger than the sum of its proper divisors (7972222238).

9111111112 is a wasteful number, since it uses less digits than its factorization.

9111111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138888895 (or 1138888891 counting only the distinct ones).

The product of its digits is 18, while the sum is 19.

The square root of 9111111112 is about 95452.1404264986. The cubic root of 9111111112 is about 2088.6088520873.

The spelling of 9111111112 in words is "nine billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".