111123120241 has 4 divisors (see below), whose sum is σ = 126997851712. Its totient is φ = 95248388772.

The previous prime is 111123120239. The next prime is 111123120259. The reversal of 111123120241 is 142021321111.

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: 142021321111 = 233 ⋅609533567.

It is a cyclic number.

It is not a de Polignac number, because 111123120241 - 2¹ = 111123120239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111123120281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7937365725 + ... + 7937365738.

It is an arithmetic number, because the mean of its divisors is an integer number (31749462928).

Almost surely, 2^111123120241 is an apocalyptic number.

It is an amenable number.

111123120241 is a deficient number, since it is larger than the sum of its proper divisors (15874731471).

111123120241 is an equidigital number, since it uses as much as digits as its factorization.

111123120241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15874731470.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111123120241 its reverse (142021321111), we get a palindrome (253144441352).

The spelling of 111123120241 in words is "one hundred eleven billion, one hundred twenty-three million, one hundred twenty thousand, two hundred forty-one".