2172000216 has 32 divisors (see below), whose sum is σ = 5666088960. Its totient is φ = 692521632.

The previous prime is 2172000179. The next prime is 2172000247. The reversal of 2172000216 is 6120002712.

It is a junction number, because it is equal to n+sod(n) for n = 2172000192 and 2172000201.

It is a congruent number.

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, 1966840 + ... + 1967943.

It is an arithmetic number, because the mean of its divisors is an integer number (177065280).

Almost surely, 2^2172000216 is an apocalyptic number.

It is an amenable number.

2172000216 is an abundant number, since it is smaller than the sum of its proper divisors (3494088744).

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

2172000216 is a wasteful number, since it uses less digits than its factorization.

2172000216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934815 (or 3934811 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 2172000216 is about 46604.7231082859. The cubic root of 2172000216 is about 1295.0502539096.

Adding to 2172000216 its reverse (6120002712), we get a palindrome (8292002928).

The spelling of 2172000216 in words is "two billion, one hundred seventy-two million, two hundred sixteen", and thus it is an aban number.