211213207 has 2 divisors, whose sum is σ = 211213208. Its totient is φ = 211213206.

The previous prime is 211213157. The next prime is 211213229. The reversal of 211213207 is 702312112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211213207 - 2¹¹ = 211211159 is a prime.

It is a super-2 number, since 2×211213207² = 89222037622449698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211213297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606603 + 105606604.

It is an arithmetic number, because the mean of its divisors is an integer number (105606604).

Almost surely, 2^211213207 is an apocalyptic number.

211213207 is a deficient number, since it is larger than the sum of its proper divisors (1).

211213207 is an equidigital number, since it uses as much as digits as its factorization.

211213207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 211213207 is about 14533.1760809535. The cubic root of 211213207 is about 595.5346342151.

Adding to 211213207 its reverse (702312112), we get a palindrome (913525319).

The spelling of 211213207 in words is "two hundred eleven million, two hundred thirteen thousand, two hundred seven".