111311111122 has 4 divisors (see below), whose sum is σ = 166966666686. Its totient is φ = 55655555560.

The previous prime is 111311111099. The next prime is 111311111161. The reversal of 111311111122 is 221111113111.

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., 59678092681 + 51633018441 = 244291^2 + 227229^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111311111096 and 111311111105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27827777779 + ... + 27827777782.

Almost surely, 2^111311111122 is an apocalyptic number.

111311111122 is a deficient number, since it is larger than the sum of its proper divisors (55655555564).

111311111122 is an equidigital number, since it uses as much as digits as its factorization.

111311111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55655555563.

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

Adding to 111311111122 its reverse (221111113111), we get a palindrome (332422224233).

The spelling of 111311111122 in words is "one hundred eleven billion, three hundred eleven million, one hundred eleven thousand, one hundred twenty-two".