111111111022 has 16 divisors (see below), whose sum is σ = 168974509680. Its totient is φ = 54786497472.

The previous prime is 111111111017. The next prime is 111111111049. The reversal of 111111111022 is 220111111111.

It is a junction number, because it is equal to n+sod(n) for n = 111111110993 and 111111111011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015053 + ... + 1119175.

It is an arithmetic number, because the mean of its divisors is an integer number (10560906855).

Almost surely, 2^111111111022 is an apocalyptic number.

111111111022 is a deficient number, since it is larger than the sum of its proper divisors (57863398658).

111111111022 is a wasteful number, since it uses less digits than its factorization.

111111111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111507.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111111111022 its reverse (220111111111), we get a palindrome (331222222133).

The spelling of 111111111022 in words is "one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, twenty-two".