111222106 has 4 divisors (see below), whose sum is σ = 166833162. Its totient is φ = 55611052.

The previous prime is 111222103. The next prime is 111222119. The reversal of 111222106 is 601222111.

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

It can be written as a sum of positive squares in only one way, i.e., 72097081 + 39125025 = 8491^2 + 6255^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111222106.

It is not an unprimeable number, because it can be changed into a prime (111222103) 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 as a sum of consecutive naturals, namely, 27805525 + ... + 27805528.

Almost surely, 2^111222106 is an apocalyptic number.

111222106 is a deficient number, since it is larger than the sum of its proper divisors (55611056).

111222106 is an equidigital number, since it uses as much as digits as its factorization.

111222106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55611055.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 111222106 is about 10546.1891695531. The cubic root of 111222106 is about 480.9098858245.

Adding to 111222106 its reverse (601222111), we get a palindrome (712444217).

The spelling of 111222106 in words is "one hundred eleven million, two hundred twenty-two thousand, one hundred six".