211213273 has 2 divisors, whose sum is σ = 211213274. Its totient is φ = 211213272.

The previous prime is 211213259. The next prime is 211213297. The reversal of 211213273 is 372312112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211208089 + 5184 = 14533^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 211213273 - 2⁵ = 211213241 is a prime.

It is a super-2 number, since 2×211213273² = 89222093382745058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211213073) 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, 105606636 + 105606637.

It is an arithmetic number, because the mean of its divisors is an integer number (105606637).

Almost surely, 2^211213273 is an apocalyptic number.

It is an amenable number.

211213273 is a deficient number, since it is larger than the sum of its proper divisors (1).

211213273 is an equidigital number, since it uses as much as digits as its factorization.

211213273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 211213273 is about 14533.1783516201. The cubic root of 211213273 is about 595.5346962460.

Adding to 211213273 its reverse (372312112), we get a palindrome (583525385).

The spelling of 211213273 in words is "two hundred eleven million, two hundred thirteen thousand, two hundred seventy-three".