211234213 has 2 divisors, whose sum is σ = 211234214. Its totient is φ = 211234212.

The previous prime is 211234201. The next prime is 211234223. The reversal of 211234213 is 312432112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110292004 + 100942209 = 10502^2 + 10047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211234213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211234223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105617106 + 105617107.

It is an arithmetic number, because the mean of its divisors is an integer number (105617107).

Almost surely, 2^211234213 is an apocalyptic number.

It is an amenable number.

211234213 is a deficient number, since it is larger than the sum of its proper divisors (1).

211234213 is an equidigital number, since it uses as much as digits as its factorization.

211234213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 211234213 is about 14533.8987542916. The cubic root of 211234213 is about 595.5543763294.

Adding to 211234213 its reverse (312432112), we get a palindrome (523666325).

The spelling of 211234213 in words is "two hundred eleven million, two hundred thirty-four thousand, two hundred thirteen".