2172161210 has 8 divisors (see below), whose sum is σ = 3909890196. Its totient is φ = 868864480.

The previous prime is 2172161113. The next prime is 2172161231. The reversal of 2172161210 is 121612712.

It can be written as a sum of positive squares in 2 ways, for example, as 2060161321 + 111999889 = 45389^2 + 10583^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108608051 + ... + 108608070.

Almost surely, 2^2172161210 is an apocalyptic number.

2172161210 is a deficient number, since it is larger than the sum of its proper divisors (1737728986).

2172161210 is a wasteful number, since it uses less digits than its factorization.

2172161210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217216128.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 2172161210 is about 46606.4503046520. The cubic root of 2172161210 is about 1295.0822505562.

Adding to 2172161210 its reverse (121612712), we get a palindrome (2293773922).

The spelling of 2172161210 in words is "two billion, one hundred seventy-two million, one hundred sixty-one thousand, two hundred ten".