213212211 has 8 divisors (see below), whose sum is σ = 284382144. Its totient is φ = 142091880.

The previous prime is 213212179. The next prime is 213212261. The reversal of 213212211 is 112212312.

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

It is not a de Polignac number, because 213212211 - 2⁵ = 213212179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213212261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825 + ... + 20666.

It is an arithmetic number, because the mean of its divisors is an integer number (35547768).

Almost surely, 2^213212211 is an apocalyptic number.

213212211 is a deficient number, since it is larger than the sum of its proper divisors (71169933).

213212211 is a wasteful number, since it uses less digits than its factorization.

213212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24801.

The product of its digits is 48, while the sum is 15.

The square root of 213212211 is about 14601.7879384684. The cubic root of 213212211 is about 597.4075285079.

Adding to 213212211 its reverse (112212312), we get a palindrome (325424523).

It can be divided in two parts, 21321 and 2211, that added together give a palindrome (23532).

The spelling of 213212211 in words is "two hundred thirteen million, two hundred twelve thousand, two hundred eleven".