111111122 has 16 divisors (see below), whose sum is σ = 173151000. Its totient is φ = 53410560.

The previous prime is 111111113. The next prime is 111111131. The reversal of 111111122 is 221111111.

It is an interprime number because it is at equal distance from previous prime (111111113) and next prime (111111131).

It can be written as a sum of positive squares in 4 ways, for example, as 103815721 + 7295401 = 10189^2 + 2701^2 .

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10004 + ... + 17952.

Almost surely, 2^111111122 is an apocalyptic number.

111111122 is a deficient number, since it is larger than the sum of its proper divisors (62039878).

111111122 is a wasteful number, since it uses less digits than its factorization.

111111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221.

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

The square root of 111111122 is about 10540.9260503999. The cubic root of 111111122 is about 480.7498724736.

Subtracting from 111111122 its sum of digits (11), we obtain a palindrome (111111111).

Adding to 111111122 its reverse (221111111), we get a palindrome (332222233).

It can be divided in two parts, 1111111 and 22, that multiplied together give a palindrome (24444442).

The spelling of 111111122 in words is "one hundred eleven million, one hundred eleven thousand, one hundred twenty-two".