11111120120 has 32 divisors (see below), whose sum is σ = 25003332720. Its totient is φ = 4443859200.

The previous prime is 11111120081. The next prime is 11111120123. The reversal of 11111120120 is 2102111111.

11111120120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×11111120120³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111120123) 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 7 ways as a sum of consecutive naturals, for example, 410939 + ... + 437141.

Almost surely, 2^11111120120 is an apocalyptic number.

11111120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111120120 is an abundant number, since it is smaller than the sum of its proper divisors (13892212600).

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

11111120120 is a wasteful number, since it uses less digits than its factorization.

11111120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36815 (or 36811 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11111120120 its reverse (2102111111), we get a palindrome (13213231231).

Subtracting from 11111120120 its reverse (2102111111), we obtain a palindrome (9009009009).

The spelling of 11111120120 in words is "eleven billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty".