210221042330 has 32 divisors (see below), whose sum is σ = 409574010384. Its totient is φ = 77226057216.

The previous prime is 210221042257. The next prime is 210221042399. The reversal of 210221042330 is 33240122012.

It can be written as a sum of positive squares in 8 ways, for example, as 99263433721 + 110957608609 = 315061^2 + 333103^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4078667 + ... + 4129886.

Almost surely, 2^210221042330 is an apocalyptic number.

210221042330 is a deficient number, since it is larger than the sum of its proper divisors (199352968054).

210221042330 is a wasteful number, since it uses less digits than its factorization.

210221042330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8208770.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 210221042330 its reverse (33240122012), we get a palindrome (243461164342).

The spelling of 210221042330 in words is "two hundred ten billion, two hundred twenty-one million, forty-two thousand, three hundred thirty".