211030229 has 2 divisors, whose sum is σ = 211030230. Its totient is φ = 211030228.

The previous prime is 211030219. The next prime is 211030241. The reversal of 211030229 is 922030112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209467729 + 1562500 = 14473^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 211030229 - 2¹⁶ = 210964693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211030229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211030219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105515114 + 105515115.

It is an arithmetic number, because the mean of its divisors is an integer number (105515115).

Almost surely, 2^211030229 is an apocalyptic number.

It is an amenable number.

211030229 is a deficient number, since it is larger than the sum of its proper divisors (1).

211030229 is an equidigital number, since it uses as much as digits as its factorization.

211030229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 211030229 is about 14526.8795341601. The cubic root of 211030229 is about 595.3626102201.

The spelling of 211030229 in words is "two hundred eleven million, thirty thousand, two hundred twenty-nine".