2175421132 has 24 divisors (see below), whose sum is σ = 3982829760. Its totient is φ = 1038599040.

The previous prime is 2175421117. The next prime is 2175421139. The reversal of 2175421132 is 2311245712.

It is a super-2 number, since 2×2175421132² = 9464914203104322848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2175421132.

It is not an unprimeable number, because it can be changed into a prime (2175421139) 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, 133407 + ... + 148822.

It is an arithmetic number, because the mean of its divisors is an integer number (165951240).

Almost surely, 2^2175421132 is an apocalyptic number.

It is an amenable number.

2175421132 is a deficient number, since it is larger than the sum of its proper divisors (1807408628).

2175421132 is a wasteful number, since it uses less digits than its factorization.

2175421132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282321 (or 282319 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 2175421132 is about 46641.4100558720. The cubic root of 2175421132 is about 1295.7298017658.

Adding to 2175421132 its reverse (2311245712), we get a palindrome (4486666844).

The spelling of 2175421132 in words is "two billion, one hundred seventy-five million, four hundred twenty-one thousand, one hundred thirty-two".