2172803212 has 12 divisors (see below), whose sum is σ = 3802844920. Its totient is φ = 1086276096.

The previous prime is 2172803189. The next prime is 2172803219. The reversal of 2172803212 is 2123082712.

It is not an unprimeable number, because it can be changed into a prime (2172803219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15283 + ... + 67669.

Almost surely, 2^2172803212 is an apocalyptic number.

It is an amenable number.

2172803212 is a deficient number, since it is larger than the sum of its proper divisors (1630041708).

2172803212 is a wasteful number, since it uses less digits than its factorization.

2172803212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62760 (or 62758 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2172803212 is about 46613.3372759342. The cubic root of 2172803212 is about 1295.2098291003.

Adding to 2172803212 its reverse (2123082712), we get a palindrome (4295885924).

The spelling of 2172803212 in words is "two billion, one hundred seventy-two million, eight hundred three thousand, two hundred twelve".