9900111101112 has 48 divisors (see below), whose sum is σ = 28390024484640. Its totient is φ = 3105917207808.

The previous prime is 9900111101071. The next prime is 9900111101143. The reversal of 9900111101112 is 2111011110099.

It is a super-2 number, since 2×9900111101112² (a number of 27 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 4044161808 + ... + 4044164255.

It is an arithmetic number, because the mean of its divisors is an integer number (591458843430).

Almost surely, 2^{9900111101112} is an apocalyptic number.

It is an amenable number.

9900111101112 is an abundant number, since it is smaller than the sum of its proper divisors (18489913383528).

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

9900111101112 is a wasteful number, since it uses less digits than its factorization.

9900111101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088326092 (or 8088326085 counting only the distinct ones).

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

The spelling of 9900111101112 in words is "nine trillion, nine hundred billion, one hundred eleven million, one hundred one thousand, one hundred twelve".