111110510550601 has 2 divisors, whose sum is σ = 111110510550602. Its totient is φ = 111110510550600.

The previous prime is 111110510550553. The next prime is 111110510550607. The reversal of 111110510550601 is 106055015011111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102153066126400 + 8957444424201 = 10107080^2 + 2992899^2 .

It is an emirp because it is prime and its reverse (106055015011111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111110510550601 - 2³⁹ = 110560754736713 is a prime.

It is a super-2 number, since 2×111110510550601² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111110510550601.

It is not a weakly prime, because it can be changed into another prime (111110510550607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555255275300 + 55555255275301.

It is an arithmetic number, because the mean of its divisors is an integer number (55555255275301).

Almost surely, 2^{111110510550601} is an apocalyptic number.

It is an amenable number.

111110510550601 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110510550601 is an equidigital number, since it uses as much as digits as its factorization.

111110510550601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 28.

Adding to 111110510550601 its reverse (106055015011111), we get a palindrome (217165525561712).

The spelling of 111110510550601 in words is "one hundred eleven trillion, one hundred ten billion, five hundred ten million, five hundred fifty thousand, six hundred one".