210221012000221 has 8 divisors (see below), whose sum is σ = 210245810562464. Its totient is φ = 210196214086320.

The previous prime is 210221012000201. The next prime is 210221012000243. The reversal of 210221012000221 is 122000210122012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210221012000221 - 2¹⁵ = 210221011967453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210221012000195 and 210221012000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221012000201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992687470 + ... + 992899216.

It is an arithmetic number, because the mean of its divisors is an integer number (26280726320308).

Almost surely, 2^{210221012000221} is an apocalyptic number.

It is an amenable number.

210221012000221 is a deficient number, since it is larger than the sum of its proper divisors (24798562243).

210221012000221 is a wasteful number, since it uses less digits than its factorization.

210221012000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324171.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210221012000221 its reverse (122000210122012), we get a palindrome (332221222122233).

The spelling of 210221012000221 in words is "two hundred ten trillion, two hundred twenty-one billion, twelve million, two hundred twenty-one", and thus it is an aban number.