111211042141 has 2 divisors, whose sum is σ = 111211042142. Its totient is φ = 111211042140.

The previous prime is 111211042099. The next prime is 111211042157. The reversal of 111211042141 is 141240112111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97003594116 + 14207448025 = 311454^2 + 119195^2 .

It is a cyclic number.

It is not a de Polignac number, because 111211042141 - 2¹¹ = 111211040093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111211042741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605521070 + 55605521071.

It is an arithmetic number, because the mean of its divisors is an integer number (55605521071).

Almost surely, 2^111211042141 is an apocalyptic number.

It is an amenable number.

111211042141 is a deficient number, since it is larger than the sum of its proper divisors (1).

111211042141 is an equidigital number, since it uses as much as digits as its factorization.

111211042141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111211042141 its reverse (141240112111), we get a palindrome (252451154252).

The spelling of 111211042141 in words is "one hundred eleven billion, two hundred eleven million, forty-two thousand, one hundred forty-one".