2171611172 has 24 divisors (see below), whose sum is σ = 3830561280. Its totient is φ = 1077196640.

The previous prime is 2171611159. The next prime is 2171611187. The reversal of 2171611172 is 2711161712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293543 + ... + 300849.

It is an arithmetic number, because the mean of its divisors is an integer number (159606720).

Almost surely, 2^2171611172 is an apocalyptic number.

It is an amenable number.

2171611172 is a deficient number, since it is larger than the sum of its proper divisors (1658950108).

2171611172 is a wasteful number, since it uses less digits than its factorization.

2171611172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7891 (or 7889 counting only the distinct ones).

The product of its digits is 1176, while the sum is 29.

The square root of 2171611172 is about 46600.5490525595. The cubic root of 2171611172 is about 1294.9729270887.

Adding to 2171611172 its reverse (2711161712), we get a palindrome (4882772884).

The spelling of 2171611172 in words is "two billion, one hundred seventy-one million, six hundred eleven thousand, one hundred seventy-two".