2171142066 has 16 divisors (see below), whose sum is σ = 4357963584. Its totient is φ = 721100784.

The previous prime is 2171142037. The next prime is 2171142091. The reversal of 2171142066 is 6602411712.

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 7 ways as a sum of consecutive naturals, for example, 651510 + ... + 654833.

It is an arithmetic number, because the mean of its divisors is an integer number (272372724).

Almost surely, 2^2171142066 is an apocalyptic number.

2171142066 is an abundant number, since it is smaller than the sum of its proper divisors (2186821518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2171142066 is a wasteful number, since it uses less digits than its factorization.

2171142066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306625.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2171142066 is about 46595.5155138346. The cubic root of 2171142066 is about 1294.8796747721.

Adding to 2171142066 its reverse (6602411712), we get a palindrome (8773553778).

The spelling of 2171142066 in words is "two billion, one hundred seventy-one million, one hundred forty-two thousand, sixty-six".