85122911 has 2 divisors, whose sum is σ = 85122912. Its totient is φ = 85122910.

The previous prime is 85122871. The next prime is 85122923. The reversal of 85122911 is 11922158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85122911 - 2¹⁰ = 85121887 is a prime.

It is a super-2 number, since 2×85122911² = 14491819954227842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85122941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42561455 + 42561456.

It is an arithmetic number, because the mean of its divisors is an integer number (42561456).

Almost surely, 2^85122911 is an apocalyptic number.

85122911 is a deficient number, since it is larger than the sum of its proper divisors (1).

85122911 is an equidigital number, since it uses as much as digits as its factorization.

85122911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 29.

The square root of 85122911 is about 9226.2078342079. The cubic root of 85122911 is about 439.8947940617.

The spelling of 85122911 in words is "eighty-five million, one hundred twenty-two thousand, nine hundred eleven".