120811 has 2 divisors, whose sum is σ = 120812. Its totient is φ = 120810.

The previous prime is 120779. The next prime is 120817. The reversal of 120811 is 118021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120811 - 2⁵ = 120779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120791 and 120800.

It is not a weakly prime, because it can be changed into another prime (120817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60405 + 60406.

It is an arithmetic number, because the mean of its divisors is an integer number (60406).

2¹²⁰⁸¹¹ is an apocalyptic number.

120811 is a deficient number, since it is larger than the sum of its proper divisors (1).

120811 is an equidigital number, since it uses as much as digits as its factorization.

120811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 120811 is about 347.5787680512. The cubic root of 120811 is about 49.4351086565.

Adding to 120811 its reverse (118021), we get a palindrome (238832).

The spelling of 120811 in words is "one hundred twenty thousand, eight hundred eleven".