9912122110111 has 24 divisors (see below), whose sum is σ = 10983495891456. Its totient is φ = 8936347099680.

The previous prime is 9912122110103. The next prime is 9912122110127. The reversal of 9912122110111 is 1110112212199.

It is not a de Polignac number, because 9912122110111 - 2³ = 9912122110103 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 (9912122110511) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 181436946 + ... + 181491568.

It is an arithmetic number, because the mean of its divisors is an integer number (457645662144).

Almost surely, 2^{9912122110111} is an apocalyptic number.

9912122110111 is a deficient number, since it is larger than the sum of its proper divisors (1071373781345).

9912122110111 is a wasteful number, since it uses less digits than its factorization.

9912122110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79663 (or 79650 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 9912122110111 in words is "nine trillion, nine hundred twelve billion, one hundred twenty-two million, one hundred ten thousand, one hundred eleven".