213213100211 has 4 divisors (see below), whose sum is σ = 214169212992. Its totient is φ = 212256987432.

The previous prime is 213213100189. The next prime is 213213100271. The reversal of 213213100211 is 112001312312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213213100211 is a prime.

It is a super-2 number, since 2×213213100211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213213100211.

It is not an unprimeable number, because it can be changed into a prime (213213100271) 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, 478056056 + ... + 478056501.

It is an arithmetic number, because the mean of its divisors is an integer number (53542303248).

Almost surely, 2^213213100211 is an apocalyptic number.

213213100211 is a deficient number, since it is larger than the sum of its proper divisors (956112781).

213213100211 is an equidigital number, since it uses as much as digits as its factorization.

213213100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956112780.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213213100211 its reverse (112001312312), we get a palindrome (325214412523).

The spelling of 213213100211 in words is "two hundred thirteen billion, two hundred thirteen million, one hundred thousand, two hundred eleven".