211042297 has 2 divisors, whose sum is σ = 211042298. Its totient is φ = 211042296.

The previous prime is 211042289. The next prime is 211042387. The reversal of 211042297 is 792240112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199826496 + 11215801 = 14136^2 + 3349^2 .

It is a cyclic number.

It is not a de Polignac number, because 211042297 - 2³ = 211042289 is a prime.

It is a super-2 number, since 2×211042297² = 89077702246072418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211042207) 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, 105521148 + 105521149.

It is an arithmetic number, because the mean of its divisors is an integer number (105521149).

Almost surely, 2^211042297 is an apocalyptic number.

It is an amenable number.

211042297 is a deficient number, since it is larger than the sum of its proper divisors (1).

211042297 is an equidigital number, since it uses as much as digits as its factorization.

211042297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 211042297 is about 14527.2948961601. The cubic root of 211042297 is about 595.3739588297.

The spelling of 211042297 in words is "two hundred eleven million, forty-two thousand, two hundred ninety-seven".