111055566101 has 2 divisors, whose sum is σ = 111055566102. Its totient is φ = 111055566100.

The previous prime is 111055566077. The next prime is 111055566157. The reversal of 111055566101 is 101665550111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100266589201 + 10788976900 = 316649^2 + 103870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111055566101 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111055566301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55527783050 + 55527783051.

It is an arithmetic number, because the mean of its divisors is an integer number (55527783051).

Almost surely, 2^111055566101 is an apocalyptic number.

It is an amenable number.

111055566101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111055566101 is an equidigital number, since it uses as much as digits as its factorization.

111055566101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 111055566101 in words is "one hundred eleven billion, fifty-five million, five hundred sixty-six thousand, one hundred one".