111110120010121 has 4 divisors (see below), whose sum is σ = 111114734816772. Its totient is φ = 111105505203472.

The previous prime is 111110120010089. The next prime is 111110120010139. The reversal of 111110120010121 is 121010021011111.

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 100225326787600 + 10884793222521 = 10011260^2 + 3299211^2 .

It is a cyclic number.

It is not a de Polignac number, because 111110120010121 - 2⁵ = 111110120010089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111110120013121) 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, 2307367210 + ... + 2307415363.

It is an arithmetic number, because the mean of its divisors is an integer number (27778683704193).

Almost surely, 2^{111110120010121} is an apocalyptic number.

It is an amenable number.

111110120010121 is a deficient number, since it is larger than the sum of its proper divisors (4614806651).

111110120010121 is an equidigital number, since it uses as much as digits as its factorization.

111110120010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614806650.

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

Adding to 111110120010121 its reverse (121010021011111), we get a palindrome (232120141021232).

The spelling of 111110120010121 in words is "one hundred eleven trillion, one hundred ten billion, one hundred twenty million, ten thousand, one hundred twenty-one".