221100220211 has 8 divisors (see below), whose sum is σ = 238120236480. Its totient is φ = 204081962112.

The previous prime is 221100220163. The next prime is 221100220213. The reversal of 221100220211 is 112022001122.

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 221100220211 - 2¹⁰ = 221100219187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221100220213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172331 + ... + 686948.

It is an arithmetic number, because the mean of its divisors is an integer number (29765029560).

Almost surely, 2^221100220211 is an apocalyptic number.

221100220211 is a deficient number, since it is larger than the sum of its proper divisors (17020016269).

221100220211 is a wasteful number, since it uses less digits than its factorization.

221100220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879085.

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

Adding to 221100220211 its reverse (112022001122), we get a palindrome (333122221333).

The spelling of 221100220211 in words is "two hundred twenty-one billion, one hundred million, two hundred twenty thousand, two hundred eleven".