10111111011161 has 2 divisors, whose sum is σ = 10111111011162. Its totient is φ = 10111111011160.

The previous prime is 10111111011143. The next prime is 10111111011173. The reversal of 10111111011161 is 16111011111101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6476673794761 + 3634437216400 = 2544931^2 + 1906420^2 .

It is an emirp because it is prime and its reverse (16111011111101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10111111011161 - 2⁶ = 10111111011097 is a prime.

It is not a weakly prime, because it can be changed into another prime (10111111011101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055555505580 + 5055555505581.

It is an arithmetic number, because the mean of its divisors is an integer number (5055555505581).

Almost surely, 2^{10111111011161} is an apocalyptic number.

It is an amenable number.

10111111011161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111111011161 is an equidigital number, since it uses as much as digits as its factorization.

10111111011161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 17.

Adding to 10111111011161 its reverse (16111011111101), we get a palindrome (26222122122262).

The spelling of 10111111011161 in words is "ten trillion, one hundred eleven billion, one hundred eleven million, eleven thousand, one hundred sixty-one".