2171067085 has 32 divisors (see below), whose sum is σ = 2902822272. Its totient is φ = 1545569280.

The previous prime is 2171067077. The next prime is 2171067097. The reversal of 2171067085 is 5807601712.

It is not a de Polignac number, because 2171067085 - 2³ = 2171067077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 548082 + ... + 552028.

It is an arithmetic number, because the mean of its divisors is an integer number (90713196).

Almost surely, 2^2171067085 is an apocalyptic number.

It is an amenable number.

2171067085 is a deficient number, since it is larger than the sum of its proper divisors (731755187).

2171067085 is a wasteful number, since it uses less digits than its factorization.

2171067085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 2171067085 is about 46594.7109122913. The cubic root of 2171067085 is about 1294.8647682563.

Adding to 2171067085 its reverse (5807601712), we get a palindrome (7978668797).

It can be divided in two parts, 21710670 and 85, that added together give a triangular number (21710755 = T₆₅₈₉).

The spelling of 2171067085 in words is "two billion, one hundred seventy-one million, sixty-seven thousand, eighty-five".