111443212 has 24 divisors (see below), whose sum is σ = 198918720. Its totient is φ = 54615120.

The previous prime is 111443191. The next prime is 111443221. The reversal of 111443212 is 212344111.

It is a self number, because there is not a number n which added to its sum of digits gives 111443212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134343 + ... + 135169.

It is an arithmetic number, because the mean of its divisors is an integer number (8288280).

Almost surely, 2^111443212 is an apocalyptic number.

It is an amenable number.

111443212 is a deficient number, since it is larger than the sum of its proper divisors (87475508).

111443212 is a wasteful number, since it uses less digits than its factorization.

111443212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461 (or 1459 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 111443212 is about 10556.6667087675. Note that the first 3 decimals coincide. The cubic root of 111443212 is about 481.2283527228.

Adding to 111443212 its reverse (212344111), we get a palindrome (323787323).

The spelling of 111443212 in words is "one hundred eleven million, four hundred forty-three thousand, two hundred twelve".