11112111120 has 160 divisors (see below), whose sum is σ = 37664446464. Its totient is φ = 2687731200.

The previous prime is 11112111091. The next prime is 11112111133. The reversal of 11112111120 is 2111121111.

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

It is a junction number, because it is equal to n+sod(n) for n = 11112111096 and 11112111105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1217775 + ... + 1226865.

Almost surely, 2^11112111120 is an apocalyptic number.

11112111120 is a gapful number since it is divisible by the number (10) 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 11112111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18832223232).

11112111120 is an abundant number, since it is smaller than the sum of its proper divisors (26552335344).

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

11112111120 is a wasteful number, since it uses less digits than its factorization.

11112111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9581 (or 9575 counting only the distinct ones).

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

Adding to 11112111120 its reverse (2111121111), we get a palindrome (13223232231).

Subtracting from 11112111120 its reverse (2111121111), we obtain a palindrome (9000990009).

The spelling of 11112111120 in words is "eleven billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty".