111112444121 has 16 divisors (see below), whose sum is σ = 131169792000. Its totient is φ = 92105249040.

The previous prime is 111112444111. The next prime is 111112444129. The reversal of 111112444121 is 121444211111.

It is not a de Polignac number, because 111112444121 - 2²⁶ = 111045335257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111112444129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154490 + ... + 496076.

It is an arithmetic number, because the mean of its divisors is an integer number (8198112000).

Almost surely, 2^111112444121 is an apocalyptic number.

It is an amenable number.

111112444121 is a deficient number, since it is larger than the sum of its proper divisors (20057347879).

111112444121 is a wasteful number, since it uses less digits than its factorization.

111112444121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343124.

The product of its digits is 256, while the sum is 23.

Adding to 111112444121 its reverse (121444211111), we get a palindrome (232556655232).

The spelling of 111112444121 in words is "one hundred eleven billion, one hundred twelve million, four hundred forty-four thousand, one hundred twenty-one".