211000220221 has 8 divisors (see below), whose sum is σ = 245230280640. Its totient is φ = 177791952768.

The previous prime is 211000220209. The next prime is 211000220267. The reversal of 211000220221 is 122022000112.

It is a happy number.

211000220221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 211000220221 - 2¹¹ = 211000218173 is a prime.

It is a super-3 number, since 3×211000220221³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000320221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255447796 + ... + 255448621.

It is an arithmetic number, because the mean of its divisors is an integer number (30653785080).

Almost surely, 2^211000220221 is an apocalyptic number.

It is an amenable number.

211000220221 is a deficient number, since it is larger than the sum of its proper divisors (34230060419).

211000220221 is an equidigital number, since it uses as much as digits as its factorization.

211000220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510896483.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 211000220221 its reverse (122022000112), we get a palindrome (333022220333).

The spelling of 211000220221 in words is "two hundred eleven billion, two hundred twenty thousand, two hundred twenty-one".