111101001081061 has 2 divisors, whose sum is σ = 111101001081062. Its totient is φ = 111101001081060.

The previous prime is 111101001081023. The next prime is 111101001081067. The reversal of 111101001081061 is 160180100101111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105727441288225 + 5373559792836 = 10282385^2 + 2318094^2 .

It is a cyclic number.

It is not a de Polignac number, because 111101001081061 - 2³⁷ = 110963562127589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111101001081067) 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, 55550500540530 + 55550500540531.

It is an arithmetic number, because the mean of its divisors is an integer number (55550500540531).

Almost surely, 2^{111101001081061} is an apocalyptic number.

It is an amenable number.

111101001081061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101001081061 is an equidigital number, since it uses as much as digits as its factorization.

111101001081061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 22.

Adding to 111101001081061 its reverse (160180100101111), we get a palindrome (271281101182172).

The spelling of 111101001081061 in words is "one hundred eleven trillion, one hundred one billion, one million, eighty-one thousand, sixty-one".