212100211 has 8 divisors (see below), whose sum is σ = 236396880. Its totient is φ = 189116928.

The previous prime is 212100193. The next prime is 212100241. The reversal of 212100211 is 112001212.

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

It is a cyclic number.

It is not a de Polignac number, because 212100211 - 2¹³ = 212092019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100241) 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 7 ways as a sum of consecutive naturals, for example, 328006 + ... + 328651.

It is an arithmetic number, because the mean of its divisors is an integer number (29549610).

Almost surely, 2^212100211 is an apocalyptic number.

212100211 is a deficient number, since it is larger than the sum of its proper divisors (24296669).

212100211 is a wasteful number, since it uses less digits than its factorization.

212100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656693.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 212100211 is about 14563.6606318604. The cubic root of 212100211 is about 596.3671324422.

Adding to 212100211 its reverse (112001212), we get a palindrome (324101423).

The spelling of 212100211 in words is "two hundred twelve million, one hundred thousand, two hundred eleven".