111044410121 has 2 divisors, whose sum is σ = 111044410122. Its totient is φ = 111044410120.

The previous prime is 111044410111. The next prime is 111044410123. The reversal of 111044410121 is 121014440111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96883410121 + 14161000000 = 311261^2 + 119000^2 .

It is an emirp because it is prime and its reverse (121014440111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111044410121 - 2³⁴ = 93864540937 is a prime.

It is a super-2 number, since 2×111044410121² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 111044410123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111044410093 and 111044410102.

It is not a weakly prime, because it can be changed into another prime (111044410123) 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 as a sum of consecutive naturals, namely, 55522205060 + 55522205061.

It is an arithmetic number, because the mean of its divisors is an integer number (55522205061).

Almost surely, 2^111044410121 is an apocalyptic number.

It is an amenable number.

111044410121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111044410121 is an equidigital number, since it uses as much as digits as its factorization.

111044410121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111044410121 its reverse (121014440111), we get a palindrome (232058850232).

The spelling of 111044410121 in words is "one hundred eleven billion, forty-four million, four hundred ten thousand, one hundred twenty-one".