111010123111 has 16 divisors (see below), whose sum is σ = 114033515904. Its totient is φ = 108015142144.

The previous prime is 111010123109. The next prime is 111010123193. The reversal of 111010123111 is 111321010111.

It is a cyclic number.

It is not a de Polignac number, because 111010123111 - 2¹ = 111010123109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111010123091 and 111010123100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010124111) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 14931051 + ... + 14938483.

It is an arithmetic number, because the mean of its divisors is an integer number (7127094744).

Almost surely, 2^111010123111 is an apocalyptic number.

111010123111 is a deficient number, since it is larger than the sum of its proper divisors (3023392793).

111010123111 is a wasteful number, since it uses less digits than its factorization.

111010123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9290.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 111010123111 its reverse (111321010111), we get a palindrome (222331133222).

The spelling of 111010123111 in words is "one hundred eleven billion, ten million, one hundred twenty-three thousand, one hundred eleven".