2173100205 has 16 divisors (see below), whose sum is σ = 3659958720. Its totient is φ = 1097987328.

The previous prime is 2173100203. The next prime is 2173100207. The reversal of 2173100205 is 5020013712.

It is an interprime number because it is at equal distance from previous prime (2173100203) and next prime (2173100207).

It is not a de Polignac number, because 2173100205 - 2¹ = 2173100203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173100203) 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 15 ways as a sum of consecutive naturals, for example, 3812172 + ... + 3812741.

It is an arithmetic number, because the mean of its divisors is an integer number (228747420).

Almost surely, 2^2173100205 is an apocalyptic number.

It is an amenable number.

2173100205 is a deficient number, since it is larger than the sum of its proper divisors (1486858515).

2173100205 is a wasteful number, since it uses less digits than its factorization.

2173100205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624940.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 2173100205 is about 46616.5228754784. The cubic root of 2173100205 is about 1295.2688390045.

Adding to 2173100205 its reverse (5020013712), we get a palindrome (7193113917).

It can be divided in two parts, 2173 and 100205, that added together give a triangular number (102378 = T₄₅₂).

The spelling of 2173100205 in words is "two billion, one hundred seventy-three million, one hundred thousand, two hundred five".