111442211 has 4 divisors (see below), whose sum is σ = 112152192. Its totient is φ = 110732232.

The previous prime is 111442171. The next prime is 111442229. The reversal of 111442211 is 112244111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111442211 - 2⁶ = 111442147 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 111442211.

It is not an unprimeable number, because it can be changed into a prime (111442231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 354755 + ... + 355068.

It is an arithmetic number, because the mean of its divisors is an integer number (28038048).

Almost surely, 2^111442211 is an apocalyptic number.

111442211 is a deficient number, since it is larger than the sum of its proper divisors (709981).

111442211 is an equidigital number, since it uses as much as digits as its factorization.

111442211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709980.

The product of its digits is 64, while the sum is 17.

The square root of 111442211 is about 10556.6192978624. The cubic root of 111442211 is about 481.2269118962.

Adding to 111442211 its reverse (112244111), we get a palindrome (223686322).

The spelling of 111442211 in words is "one hundred eleven million, four hundred forty-two thousand, two hundred eleven".