213040211 has 2 divisors, whose sum is σ = 213040212. Its totient is φ = 213040210.

The previous prime is 213040193. The next prime is 213040213. The reversal of 213040211 is 112040312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213040211 - 2¹⁰ = 213039187 is a prime.

It is a super-2 number, since 2×213040211² = 90772263005849042, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 213040213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213040213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106520105 + 106520106.

It is an arithmetic number, because the mean of its divisors is an integer number (106520106).

Almost surely, 2^213040211 is an apocalyptic number.

213040211 is a deficient number, since it is larger than the sum of its proper divisors (1).

213040211 is an equidigital number, since it uses as much as digits as its factorization.

213040211 is an odious number, because the sum of its binary digits is odd.

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

The square root of 213040211 is about 14595.8970604756. The cubic root of 213040211 is about 597.2468408099.

Adding to 213040211 its reverse (112040312), we get a palindrome (325080523).

The spelling of 213040211 in words is "two hundred thirteen million, forty thousand, two hundred eleven".