211204213 has 4 divisors (see below), whose sum is σ = 230404608. Its totient is φ = 192003820.

The previous prime is 211204199. The next prime is 211204219. The reversal of 211204213 is 312402112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211204213 - 2²¹ = 209107061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211204219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9600181 + ... + 9600202.

It is an arithmetic number, because the mean of its divisors is an integer number (57601152).

Almost surely, 2^211204213 is an apocalyptic number.

It is an amenable number.

211204213 is a deficient number, since it is larger than the sum of its proper divisors (19200395).

211204213 is a wasteful number, since it uses less digits than its factorization.

211204213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19200394.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 211204213 is about 14532.8666477058. The cubic root of 211204213 is about 595.5261809644.

Adding to 211204213 its reverse (312402112), we get a palindrome (523606325).

The spelling of 211204213 in words is "two hundred eleven million, two hundred four thousand, two hundred thirteen".