211530244 has 12 divisors (see below), whose sum is σ = 378787024. Its totient is φ = 103305384.

The previous prime is 211530227. The next prime is 211530247. The reversal of 211530244 is 442035112.

It is not an unprimeable number, because it can be changed into a prime (211530247) 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, 614742 + ... + 615085.

Almost surely, 2^211530244 is an apocalyptic number.

It is an amenable number.

211530244 is a deficient number, since it is larger than the sum of its proper divisors (167256780).

211530244 is a wasteful number, since it uses less digits than its factorization.

211530244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229874 (or 1229872 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 211530244 is about 14544.0793452181. The cubic root of 211530244 is about 595.8324566969.

Adding to 211530244 its reverse (442035112), we get a palindrome (653565356).

The spelling of 211530244 in words is "two hundred eleven million, five hundred thirty thousand, two hundred forty-four".