85211099 has 2 divisors, whose sum is σ = 85211100. Its totient is φ = 85211098.

The previous prime is 85211081. The next prime is 85211101. The reversal of 85211099 is 99011258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85211099 - 2⁸ = 85210843 is a prime.

Together with 85211101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85211039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42605549 + 42605550.

It is an arithmetic number, because the mean of its divisors is an integer number (42605550).

Almost surely, 2^85211099 is an apocalyptic number.

85211099 is a deficient number, since it is larger than the sum of its proper divisors (1).

85211099 is an equidigital number, since it uses as much as digits as its factorization.

85211099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 85211099 is about 9230.9858086772. The cubic root of 85211099 is about 440.0466531111.

The spelling of 85211099 in words is "eighty-five million, two hundred eleven thousand, ninety-nine".