9901000111 has 4 divisors (see below), whose sum is σ = 10422105400. Its totient is φ = 9379894824.

The previous prime is 9901000103. The next prime is 9901000121. The reversal of 9901000111 is 1110001099.

9901000111 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1110001099 = 8699 ⋅127601.

It is a cyclic number.

It is not a de Polignac number, because 9901000111 - 2³ = 9901000103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901000121) 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 3 ways as a sum of consecutive naturals, for example, 260552616 + ... + 260552653.

It is an arithmetic number, because the mean of its divisors is an integer number (2605526350).

Almost surely, 2^9901000111 is an apocalyptic number.

9901000111 is a deficient number, since it is larger than the sum of its proper divisors (521105289).

9901000111 is a wasteful number, since it uses less digits than its factorization.

9901000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521105288.

The product of its (nonzero) digits is 81, while the sum is 22.

The square root of 9901000111 is about 99503.7693306138. The cubic root of 9901000111 is about 2147.3014718877.

The spelling of 9901000111 in words is "nine billion, nine hundred one million, one hundred eleven", and thus it is an aban number.