210221020211 has 8 divisors (see below), whose sum is σ = 219423133440. Its totient is φ = 201024079432.

The previous prime is 210221020193. The next prime is 210221020253. The reversal of 210221020211 is 112020122012.

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 210221020211 - 2¹⁴ = 210221003827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210221028211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1209935 + ... + 1372728.

It is an arithmetic number, because the mean of its divisors is an integer number (27427891680).

Almost surely, 2^210221020211 is an apocalyptic number.

210221020211 is a deficient number, since it is larger than the sum of its proper divisors (9202113229).

210221020211 is a wasteful number, since it uses less digits than its factorization.

210221020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586225.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210221020211 its reverse (112020122012), we get a palindrome (322241142223).

The spelling of 210221020211 in words is "two hundred ten billion, two hundred twenty-one million, twenty thousand, two hundred eleven".