111341243121 has 4 divisors (see below), whose sum is σ = 148454990832. Its totient is φ = 74227495412.

The previous prime is 111341243081. The next prime is 111341243179. The reversal of 111341243121 is 121342143111.

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.

It is a cyclic number.

It is not a de Polignac number, because 111341243121 - 2⁹ = 111341242609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111341243091 and 111341243100.

It is not an unprimeable number, because it can be changed into a prime (111341243021) 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, 18556873851 + ... + 18556873856.

It is an arithmetic number, because the mean of its divisors is an integer number (37113747708).

Almost surely, 2^111341243121 is an apocalyptic number.

It is an amenable number.

111341243121 is a deficient number, since it is larger than the sum of its proper divisors (37113747711).

111341243121 is an equidigital number, since it uses as much as digits as its factorization.

111341243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37113747710.

The product of its digits is 576, while the sum is 24.

Adding to 111341243121 its reverse (121342143111), we get a palindrome (232683386232).

The spelling of 111341243121 in words is "one hundred eleven billion, three hundred forty-one million, two hundred forty-three thousand, one hundred twenty-one".