210003222221 has 16 divisors (see below), whose sum is σ = 234662400000. Its totient is φ = 186623861760.

The previous prime is 210003222181. The next prime is 210003222269. The reversal of 210003222221 is 122222300012.

It is a cyclic number.

It is not a de Polignac number, because 210003222221 - 2¹⁸ = 210002960077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210003222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210003122221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272221 + ... + 1427778.

It is an arithmetic number, because the mean of its divisors is an integer number (14666400000).

Almost surely, 2^210003222221 is an apocalyptic number.

It is an amenable number.

210003222221 is a deficient number, since it is larger than the sum of its proper divisors (24659177779).

210003222221 is a wasteful number, since it uses less digits than its factorization.

210003222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700236.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 210003222221 its reverse (122222300012), we get a palindrome (332225522233).

The spelling of 210003222221 in words is "two hundred ten billion, three million, two hundred twenty-two thousand, two hundred twenty-one".