211224530 has 16 divisors (see below), whose sum is σ = 414768384. Its totient is φ = 76808880.

The previous prime is 211224511. The next prime is 211224553. The reversal of 211224530 is 35422112.

211224530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960002 + ... + 960221.

It is an arithmetic number, because the mean of its divisors is an integer number (25923024).

Almost surely, 2^211224530 is an apocalyptic number.

211224530 is a deficient number, since it is larger than the sum of its proper divisors (203543854).

211224530 is a wasteful number, since it uses less digits than its factorization.

211224530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920241.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 211224530 is about 14533.5656327000. The cubic root of 211224530 is about 595.5452760972.

Adding to 211224530 its reverse (35422112), we get a palindrome (246646642).

It can be divided in two parts, 21122 and 4530, that added together give a palindrome (25652).

The spelling of 211224530 in words is "two hundred eleven million, two hundred twenty-four thousand, five hundred thirty".