111161120 has 48 divisors (see below), whose sum is σ = 300138048. Its totient is φ = 38112000.

The previous prime is 111161101. The next prime is 111161129. The reversal of 111161120 is 21161111.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 111161095 and 111161104.

It is not an unprimeable number, because it can be changed into a prime (111161129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48506 + ... + 50745.

It is an arithmetic number, because the mean of its divisors is an integer number (6252876).

Almost surely, 2^111161120 is an apocalyptic number.

111161120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111161120 is an abundant number, since it is smaller than the sum of its proper divisors (188976928).

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

111161120 is an equidigital number, since it uses as much as digits as its factorization.

111161120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99273 (or 99265 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

The square root of 111161120 is about 10543.2973969247. The cubic root of 111161120 is about 480.8219712496.

Subtracting from 111161120 its reverse (21161111), we obtain a palindrome (90000009).

The spelling of 111161120 in words is "one hundred eleven million, one hundred sixty-one thousand, one hundred twenty".