9121109116 has 72 divisors (see below), whose sum is σ = 19677243600. Its totient is φ = 3682103040.

The previous prime is 9121109113. The next prime is 9121109167. The reversal of 9121109116 is 6119011219.

9121109116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121109113) 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 23 ways as a sum of consecutive naturals, for example, 213475 + ... + 252613.

It is an arithmetic number, because the mean of its divisors is an integer number (273295050).

Almost surely, 2^9121109116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9121109116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9838621800).

9121109116 is an abundant number, since it is smaller than the sum of its proper divisors (10556134484).

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

9121109116 is a wasteful number, since it uses less digits than its factorization.

9121109116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39227 (or 39218 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 31.

The square root of 9121109116 is about 95504.4978836076. The cubic root of 9121109116 is about 2089.3725454815.

The spelling of 9121109116 in words is "nine billion, one hundred twenty-one million, one hundred nine thousand, one hundred sixteen".