11011001111112 has 128 divisors (see below), whose sum is σ = 29058048864000. Its totient is φ = 3469998428160.

The previous prime is 11011001111093. The next prime is 11011001111141. The reversal of 11011001111112 is 21111110011011.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 31 ways as a sum of consecutive naturals, for example, 134618964 + ... + 134700732.

It is an arithmetic number, because the mean of its divisors is an integer number (227016006750).

Almost surely, 2^{11011001111112} is an apocalyptic number.

11011001111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11011001111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14529024432000).

11011001111112 is an abundant number, since it is smaller than the sum of its proper divisors (18047047752888).

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

11011001111112 is a wasteful number, since it uses less digits than its factorization.

11011001111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84631 (or 84627 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 11011001111112 its reverse (21111110011011), we get a palindrome (32122111122123).

The spelling of 11011001111112 in words is "eleven trillion, eleven billion, one million, one hundred eleven thousand, one hundred twelve".