210221230 has 16 divisors (see below), whose sum is σ = 390605184. Its totient is φ = 81375840.

The previous prime is 210221191. The next prime is 210221233. The reversal of 210221230 is 32122012.

It is a self number, because there is not a number n which added to its sum of digits gives 210221230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338757 + ... + 339376.

It is an arithmetic number, because the mean of its divisors is an integer number (24412824).

Almost surely, 2^210221230 is an apocalyptic number.

210221230 is a deficient number, since it is larger than the sum of its proper divisors (180383954).

210221230 is a wasteful number, since it uses less digits than its factorization.

210221230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678171.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 210221230 is about 14499.0078970942. The cubic root of 210221230 is about 594.6008480317.

Adding to 210221230 its reverse (32122012), we get a palindrome (242343242).

It can be divided in two parts, 2102 and 21230, that added together give a palindrome (23332).

The spelling of 210221230 in words is "two hundred ten million, two hundred twenty-one thousand, two hundred thirty".