111144403121 has 2 divisors, whose sum is σ = 111144403122. Its totient is φ = 111144403120.

The previous prime is 111144403091. The next prime is 111144403127. The reversal of 111144403121 is 121304441111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97383940096 + 13760463025 = 312064^2 + 117305^2 .

It is a cyclic number.

It is not a de Polignac number, because 111144403121 - 2⁶ = 111144403057 is a prime.

It is not a weakly prime, because it can be changed into another prime (111144403127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55572201560 + 55572201561.

It is an arithmetic number, because the mean of its divisors is an integer number (55572201561).

Almost surely, 2^111144403121 is an apocalyptic number.

It is an amenable number.

111144403121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111144403121 is an equidigital number, since it uses as much as digits as its factorization.

111144403121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 111144403121 its reverse (121304441111), we get a palindrome (232448844232).

The spelling of 111144403121 in words is "one hundred eleven billion, one hundred forty-four million, four hundred three thousand, one hundred twenty-one".