212001211 has 4 divisors (see below), whose sum is σ = 212030424. Its totient is φ = 211972000.

The previous prime is 212001149. The next prime is 212001233. The reversal of 212001211 is 112100212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212001211 - 2⁹ = 212000699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212001311) 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, 5571 + ... + 21331.

It is an arithmetic number, because the mean of its divisors is an integer number (53007606).

Almost surely, 2^212001211 is an apocalyptic number.

212001211 is a deficient number, since it is larger than the sum of its proper divisors (29213).

212001211 is a wasteful number, since it uses less digits than its factorization.

212001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29212.

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

The square root of 212001211 is about 14560.2613644124. The cubic root of 212001211 is about 596.2743311289.

Adding to 212001211 its reverse (112100212), we get a palindrome (324101423).

Subtracting from 212001211 its reverse (112100212), we obtain a palindrome (99900999).

It can be divided in two parts, 212001 and 211, that added together give a palindrome (212212).

The spelling of 212001211 in words is "two hundred twelve million, one thousand, two hundred eleven".