111216660241 has 4 divisors (see below), whose sum is σ = 116052167232. Its totient is φ = 106381153252.

The previous prime is 111216660199. The next prime is 111216660253. The reversal of 111216660241 is 142066612111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142066612111 = 271 ⋅524231041.

It is a cyclic number.

It is not a de Polignac number, because 111216660241 - 2³⁵ = 76856921873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111216660941) 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, 2417753461 + ... + 2417753506.

It is an arithmetic number, because the mean of its divisors is an integer number (29013041808).

Almost surely, 2^111216660241 is an apocalyptic number.

It is an amenable number.

111216660241 is a deficient number, since it is larger than the sum of its proper divisors (4835506991).

111216660241 is an equidigital number, since it uses as much as digits as its factorization.

111216660241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835506990.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 111216660241 in words is "one hundred eleven billion, two hundred sixteen million, six hundred sixty thousand, two hundred forty-one".