210000300221 has 4 divisors (see below), whose sum is σ = 210016692444. Its totient is φ = 209983908000.

The previous prime is 210000300199. The next prime is 210000300233. The reversal of 210000300221 is 122003000012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24940305625 + 185059994596 = 157925^2 + 430186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210000300221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210000300421) 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, 8176880 + ... + 8202521.

It is an arithmetic number, because the mean of its divisors is an integer number (52504173111).

Almost surely, 2^210000300221 is an apocalyptic number.

It is an amenable number.

210000300221 is a deficient number, since it is larger than the sum of its proper divisors (16392223).

210000300221 is a wasteful number, since it uses less digits than its factorization.

210000300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16392222.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 210000300221 its reverse (122003000012), we get a palindrome (332003300233).

The spelling of 210000300221 in words is "two hundred ten billion, three hundred thousand, two hundred twenty-one".