2172000215 has 72 divisors (see below), whose sum is σ = 3415816656. Its totient is φ = 1320211200.

The previous prime is 2172000179. The next prime is 2172000247. The reversal of 2172000215 is 5120002712.

It is not a de Polignac number, because 2172000215 - 2¹² = 2171996119 is a prime.

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 71 ways as a sum of consecutive naturals, for example, 1214552 + ... + 1216338.

It is an arithmetic number, because the mean of its divisors is an integer number (47441898).

Almost surely, 2^2172000215 is an apocalyptic number.

2172000215 is a deficient number, since it is larger than the sum of its proper divisors (1243816441).

2172000215 is a wasteful number, since it uses less digits than its factorization.

2172000215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1851 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 2172000215 is about 46604.7230975574. The cubic root of 2172000215 is about 1295.0502537109.

Adding to 2172000215 its reverse (5120002712), we get a palindrome (7292002927).

The spelling of 2172000215 in words is "two billion, one hundred seventy-two million, two hundred fifteen", and thus it is an aban number.