9991110122 has 16 divisors (see below), whose sum is σ = 17133286272. Its totient is φ = 4280487120.

The previous prime is 9991110121. The next prime is 9991110161. The reversal of 9991110122 is 2210111999.

9991110122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (9991110121) 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 7 ways as a sum of consecutive naturals, for example, 73718 + ... + 159425.

It is an arithmetic number, because the mean of its divisors is an integer number (1070830392).

Almost surely, 2^9991110122 is an apocalyptic number.

9991110122 is a deficient number, since it is larger than the sum of its proper divisors (7142176150).

9991110122 is a wasteful number, since it uses less digits than its factorization.

9991110122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236213.

The product of its (nonzero) digits is 2916, while the sum is 35.

The square root of 9991110122 is about 99955.5407268652. The cubic root of 9991110122 is about 2153.7960787035.

The spelling of 9991110122 in words is "nine billion, nine hundred ninety-one million, one hundred ten thousand, one hundred twenty-two".