211030210 has 8 divisors (see below), whose sum is σ = 379854396. Its totient is φ = 84412080.

The previous prime is 211030189. The next prime is 211030219. The reversal of 211030210 is 12030112.

It can be written as a sum of positive squares in 2 ways, for example, as 195356529 + 15673681 = 13977^2 + 3959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 21103021 = 211030210 / (2 + 1 + 1 + 0 + 3 + 0 + 2 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (211030219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10551501 + ... + 10551520.

Almost surely, 2^211030210 is an apocalyptic number.

211030210 is a deficient number, since it is larger than the sum of its proper divisors (168824186).

211030210 is a wasteful number, since it uses less digits than its factorization.

211030210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21103028.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 211030210 is about 14526.8788802000. The cubic root of 211030210 is about 595.3625923524.

Adding to 211030210 its reverse (12030112), we get a palindrome (223060322).

The spelling of 211030210 in words is "two hundred eleven million, thirty thousand, two hundred ten".