112211111 has 4 divisors (see below), whose sum is σ = 113472000. Its totient is φ = 110950224.

The previous prime is 112211081. The next prime is 112211117. The reversal of 112211111 is 111112211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111112211 = 7 ⋅15873173.

It is a cyclic number.

It is not a de Polignac number, because 112211111 - 2¹⁴ = 112194727 is a prime.

It is a Duffinian number.

112211111 is a modest number, since divided by 11111 gives 1122 as remainder.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 112211092 and 112211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112211117) 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, 630311 + ... + 630488.

It is an arithmetic number, because the mean of its divisors is an integer number (28368000).

Almost surely, 2^112211111 is an apocalyptic number.

112211111 is a deficient number, since it is larger than the sum of its proper divisors (1260889).

112211111 is an equidigital number, since it uses as much as digits as its factorization.

112211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260888.

The product of its digits is 4, while the sum is 11.

The square root of 112211111 is about 10592.9746058414. The cubic root of 112211111 is about 482.3311243772.

Adding to 112211111 its reverse (111112211), we get a palindrome (223323322).

It can be divided in two parts, 112211 and 111, that multiplied together give a palindrome (12455421).

The spelling of 112211111 in words is "one hundred twelve million, two hundred eleven thousand, one hundred eleven".