85102211 has 4 divisors (see below), whose sum is σ = 88036800. Its totient is φ = 82167624.

The previous prime is 85102207. The next prime is 85102229. The reversal of 85102211 is 11220158.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85102211 - 2² = 85102207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85102291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467251 + ... + 1467308.

It is an arithmetic number, because the mean of its divisors is an integer number (22009200).

Almost surely, 2^85102211 is an apocalyptic number.

85102211 is a deficient number, since it is larger than the sum of its proper divisors (2934589).

85102211 is a wasteful number, since it uses less digits than its factorization.

85102211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934588.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 85102211 is about 9225.0859616591. The cubic root of 85102211 is about 439.8591336253.

Adding to 85102211 its reverse (11220158), we get a palindrome (96322369).

The spelling of 85102211 in words is "eighty-five million, one hundred two thousand, two hundred eleven".