213220211 has 2 divisors, whose sum is σ = 213220212. Its totient is φ = 213220210.

The previous prime is 213220207. The next prime is 213220229. The reversal of 213220211 is 112022312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213220211 - 2² = 213220207 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213220411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106610105 + 106610106.

It is an arithmetic number, because the mean of its divisors is an integer number (106610106).

Almost surely, 2^213220211 is an apocalyptic number.

213220211 is a deficient number, since it is larger than the sum of its proper divisors (1).

213220211 is an equidigital number, since it uses as much as digits as its factorization.

213220211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 213220211 is about 14602.0618749545. The cubic root of 213220211 is about 597.4150002508.

Adding to 213220211 its reverse (112022312), we get a palindrome (325242523).

The spelling of 213220211 in words is "two hundred thirteen million, two hundred twenty thousand, two hundred eleven".