111111131122 has 16 divisors (see below), whose sum is σ = 167261803200. Its totient is φ = 55357439760.

The previous prime is 111111131107. The next prime is 111111131123. The reversal of 111111131122 is 221131111111.

It is a junction number, because it is equal to n+sod(n) for n = 111111131096 and 111111131105.

It is not an unprimeable number, because it can be changed into a prime (111111131123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867004 + ... + 986872.

It is an arithmetic number, because the mean of its divisors is an integer number (10453862700).

Almost surely, 2^111111131122 is an apocalyptic number.

111111131122 is a deficient number, since it is larger than the sum of its proper divisors (56150672078).

111111131122 is a wasteful number, since it uses less digits than its factorization.

111111131122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121521.

The product of its digits is 12, while the sum is 16.

Adding to 111111131122 its reverse (221131111111), we get a palindrome (332242242233).

The spelling of 111111131122 in words is "one hundred eleven billion, one hundred eleven million, one hundred thirty-one thousand, one hundred twenty-two".