111112210111 has 32 divisors (see below), whose sum is σ = 134218598400. Its totient is φ = 89924567040.

The previous prime is 111112210091. The next prime is 111112210127. The reversal of 111112210111 is 111012211111.

It is not a de Polignac number, because 111112210111 - 2¹⁵ = 111112177343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111112210091 and 111112210100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112210151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9035455 + ... + 9047743.

It is an arithmetic number, because the mean of its divisors is an integer number (4194331200).

Almost surely, 2^111112210111 is an apocalyptic number.

111112210111 is a deficient number, since it is larger than the sum of its proper divisors (23106388289).

111112210111 is a wasteful number, since it uses less digits than its factorization.

111112210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13039.

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

Adding to 111112210111 its reverse (111012211111), we get a palindrome (222124421222).

It can be divided in two parts, 11111 and 2210111, that added together give a palindrome (2221222).

The spelling of 111112210111 in words is "one hundred eleven billion, one hundred twelve million, two hundred ten thousand, one hundred eleven".