111110313121 has 4 divisors (see below), whose sum is σ = 111408196372. Its totient is φ = 110812429872.

The previous prime is 111110313113. The next prime is 111110313133. The reversal of 111110313121 is 121313011111.

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 69255290896 + 41855022225 = 263164^2 + 204585^2 .

It is a cyclic number.

It is not a de Polignac number, because 111110313121 - 2³ = 111110313113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111110313095 and 111110313104.

It is not an unprimeable number, because it can be changed into a prime (111110313101) 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, 148941066 + ... + 148941811.

It is an arithmetic number, because the mean of its divisors is an integer number (27852049093).

Almost surely, 2^111110313121 is an apocalyptic number.

It is an amenable number.

111110313121 is a deficient number, since it is larger than the sum of its proper divisors (297883251).

111110313121 is an equidigital number, since it uses as much as digits as its factorization.

111110313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297883250.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 111110313121 its reverse (121313011111), we get a palindrome (232423324232).

The spelling of 111110313121 in words is "one hundred eleven billion, one hundred ten million, three hundred thirteen thousand, one hundred twenty-one".