211200172 has 12 divisors (see below), whose sum is σ = 369754000. Its totient is φ = 105556176.

The previous prime is 211200167. The next prime is 211200173. The reversal of 211200172 is 271002112.

It is not an unprimeable number, because it can be changed into a prime (211200173) 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 3 ways as a sum of consecutive naturals, for example, 1393 + ... + 20599.

Almost surely, 2^211200172 is an apocalyptic number.

It is an amenable number.

211200172 is a deficient number, since it is larger than the sum of its proper divisors (158553828).

211200172 is a wasteful number, since it uses less digits than its factorization.

211200172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21960 (or 21958 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 211200172 is about 14532.7276173470. The cubic root of 211200172 is about 595.5223828447.

Adding to 211200172 its reverse (271002112), we get a palindrome (482202284).

The spelling of 211200172 in words is "two hundred eleven million, two hundred thousand, one hundred seventy-two".