211204 has 24 divisors (see below), whose sum is σ = 445760. Its totient is φ = 85536.

The previous prime is 211199. The next prime is 211213. The reversal of 211204 is 402112.

211204 = T₅₆ + T₅₇ + ... + T₁₁₂.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334 + ... + 730.

2²¹¹²⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222880).

211204 is an abundant number, since it is smaller than the sum of its proper divisors (234556).

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

211204 is a wasteful number, since it uses less digits than its factorization.

211204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 211204 is about 459.5693636438. The cubic root of 211204 is about 59.5525980768.

Adding to 211204 its reverse (402112), we get a palindrome (613316).

It can be divided in two parts, 21 and 1204, that added together give a triangular number (1225 = T₄₉).

The spelling of 211204 in words is "two hundred eleven thousand, two hundred four", and thus it is an iban number.