111220112 has 20 divisors (see below), whose sum is σ = 217469340. Its totient is φ = 55099008.

The previous prime is 111220097. The next prime is 111220117. The reversal of 111220112 is 211022111.

It can be written as a sum of positive squares in 2 ways, for example, as 35808256 + 75411856 = 5984^2 + 8684^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111220093 and 111220102.

It is not an unprimeable number, because it can be changed into a prime (111220117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30143 + ... + 33630.

It is an arithmetic number, because the mean of its divisors is an integer number (10873467).

Almost surely, 2^111220112 is an apocalyptic number.

It is an amenable number.

111220112 is a deficient number, since it is larger than the sum of its proper divisors (106249228).

111220112 is a wasteful number, since it uses less digits than its factorization.

111220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63890 (or 63884 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 111220112 is about 10546.0946326116. The cubic root of 111220112 is about 480.9070118754.

Adding to 111220112 its reverse (211022111), we get a palindrome (322242223).

The spelling of 111220112 in words is "one hundred eleven million, two hundred twenty thousand, one hundred twelve".