9901111110102 has 72 divisors (see below), whose sum is σ = 22643690130360. Its totient is φ = 3126282246720.

The previous prime is 9901111110091. The next prime is 9901111110179. The reversal of 9901111110102 is 2010111111099.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55280049 + ... + 55458867.

It is an arithmetic number, because the mean of its divisors is an integer number (314495696255).

Almost surely, 2^{9901111110102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9901111110102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11321845065180).

9901111110102 is an abundant number, since it is smaller than the sum of its proper divisors (12742579020258).

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

9901111110102 is a wasteful number, since it uses less digits than its factorization.

9901111110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187386 (or 187364 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 27.

The spelling of 9901111110102 in words is "nine trillion, nine hundred one billion, one hundred eleven million, one hundred ten thousand, one hundred two".