221201020211 has 8 divisors (see below), whose sum is σ = 230597298048. Its totient is φ = 211946040000.

The previous prime is 221201020193. The next prime is 221201020247. The reversal of 221201020211 is 112020102122.

221201020211 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 221201020211 - 2¹⁰ = 221201019187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221201020511) 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, 35321210 + ... + 35327471.

It is an arithmetic number, because the mean of its divisors is an integer number (28824662256).

Almost surely, 2^221201020211 is an apocalyptic number.

221201020211 is a deficient number, since it is larger than the sum of its proper divisors (9396277837).

221201020211 is a wasteful number, since it uses less digits than its factorization.

221201020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70648813.

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

Adding to 221201020211 its reverse (112020102122), we get a palindrome (333221122333).

The spelling of 221201020211 in words is "two hundred twenty-one billion, two hundred one million, twenty thousand, two hundred eleven".