111112001111121 has 16 divisors (see below), whose sum is σ = 148184345712000. Its totient is φ = 74057164030080.

The previous prime is 111112001111107. The next prime is 111112001111161. The reversal of 111112001111121 is 121111100211111.

It is a happy number.

It is not a de Polignac number, because 111112001111121 - 2⁶ = 111112001111057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111112001111121.

It is not an unprimeable number, because it can be changed into a prime (111112001111161) 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, 221763741 + ... + 222264213.

It is an arithmetic number, because the mean of its divisors is an integer number (9261521607000).

Almost surely, 2^{111112001111121} is an apocalyptic number.

It is an amenable number.

111112001111121 is a deficient number, since it is larger than the sum of its proper divisors (37072344600879).

111112001111121 is an equidigital number, since it uses as much as digits as its factorization.

111112001111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517816.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111112001111121 its reverse (121111100211111), we get a palindrome (232223101322232).

The spelling of 111112001111121 in words is "one hundred eleven trillion, one hundred twelve billion, one million, one hundred eleven thousand, one hundred twenty-one".