1112100111121 has 4 divisors (see below), whose sum is σ = 1116057763044. Its totient is φ = 1108142459200.

The previous prime is 1112100111119. The next prime is 1112100111167. The reversal of 1112100111121 is 1211110012111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 640817861121 + 471282250000 = 800511^2 + 686500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112100111121 - 2¹ = 1112100111119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112100111191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1978825540 + ... + 1978826101.

It is an arithmetic number, because the mean of its divisors is an integer number (279014440761).

Almost surely, 2^{1112100111121} is an apocalyptic number.

It is an amenable number.

1112100111121 is a deficient number, since it is larger than the sum of its proper divisors (3957651923).

1112100111121 is an equidigital number, since it uses as much as digits as its factorization.

1112100111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957651922.

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

Adding to 1112100111121 its reverse (1211110012111), we get a palindrome (2323210123232).

It can be divided in two parts, 1112100 and 111121, that added together give a palindrome (1223221).

The spelling of 1112100111121 in words is "one trillion, one hundred twelve billion, one hundred million, one hundred eleven thousand, one hundred twenty-one".