85111211 has 8 divisors (see below), whose sum is σ = 88611744. Its totient is φ = 81673920.

The previous prime is 85111207. The next prime is 85111237. The reversal of 85111211 is 11211158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85111211 - 2² = 85111207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85111291) by changing a digit.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13055 + ... + 18456.

It is an arithmetic number, because the mean of its divisors is an integer number (11076468).

Almost surely, 2^85111211 is an apocalyptic number.

85111211 is a deficient number, since it is larger than the sum of its proper divisors (3500533).

85111211 is a wasteful number, since it uses less digits than its factorization.

85111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31621.

The product of its digits is 80, while the sum is 20.

The square root of 85111211 is about 9225.5737490955. The cubic root of 85111211 is about 439.8746388733.

Adding to 85111211 its reverse (11211158), we get a palindrome (96322369).

The spelling of 85111211 in words is "eighty-five million, one hundred eleven thousand, two hundred eleven".