111201200055577 has 2 divisors, whose sum is σ = 111201200055578. Its totient is φ = 111201200055576.

The previous prime is 111201200055557. The next prime is 111201200055593. The reversal of 111201200055577 is 775550002102111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78335527741696 + 32865672313881 = 8850736^2 + 5732859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111201200055577 is a prime.

It is not a weakly prime, because it can be changed into another prime (111201200055557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600600027788 + 55600600027789.

It is an arithmetic number, because the mean of its divisors is an integer number (55600600027789).

Almost surely, 2^{111201200055577} is an apocalyptic number.

It is an amenable number.

111201200055577 is a deficient number, since it is larger than the sum of its proper divisors (1).

111201200055577 is an equidigital number, since it uses as much as digits as its factorization.

111201200055577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24500, while the sum is 37.

Adding to 111201200055577 its reverse (775550002102111), we get a palindrome (886751202157688).

The spelling of 111201200055577 in words is "one hundred eleven trillion, two hundred one billion, two hundred million, fifty-five thousand, five hundred seventy-seven".