11112111122 has 48 divisors (see below), whose sum is σ = 19948099392. Its totient is φ = 4626891360.

The previous prime is 11112111091. The next prime is 11112111133. The reversal of 11112111122 is 22111121111.

It is a Harshad number since it is a multiple of its sum of digits (14).

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

It is a junction number, because it is equal to n+sod(n) for n = 11112111097 and 11112111106.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 524597 + ... + 545367.

It is an arithmetic number, because the mean of its divisors is an integer number (415585404).

Almost surely, 2^11112111122 is an apocalyptic number.

11112111122 is a deficient number, since it is larger than the sum of its proper divisors (8835988270).

11112111122 is a wasteful number, since it uses less digits than its factorization.

11112111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20943 (or 20936 counting only the distinct ones).

The product of its digits is 8, while the sum is 14.

Adding to 11112111122 its reverse (22111121111), we get a palindrome (33223232233).

It can be divided in two parts, 111121111 and 22, that multiplied together give a palindrome (2444664442).

The spelling of 11112111122 in words is "eleven billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty-two".