11111201112 has 64 divisors (see below), whose sum is σ = 30875074560. Its totient is φ = 3303497600.

The previous prime is 11111201093. The next prime is 11111201113. The reversal of 11111201112 is 21110211111.

11111201112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111201113) 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 15 ways as a sum of consecutive naturals, for example, 383064 + ... + 411047.

It is an arithmetic number, because the mean of its divisors is an integer number (482423040).

Almost surely, 2^11111201112 is an apocalyptic number.

11111201112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111201112 is an abundant number, since it is smaller than the sum of its proper divisors (19763873448).

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

11111201112 is a wasteful number, since it uses less digits than its factorization.

11111201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794184 (or 794180 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11111201112 its reverse (21110211111), we get a palindrome (32221412223).

Subtracting 11111201112 from its reverse (21110211111), we obtain a palindrome (9999009999).

The spelling of 11111201112 in words is "eleven billion, one hundred eleven million, two hundred one thousand, one hundred twelve".