221201222120211 has 8 divisors (see below), whose sum is σ = 295141355388880. Its totient is φ = 147364285132512.

The previous prime is 221201222120209. The next prime is 221201222120239. The reversal of 221201222120211 is 112021222102122.

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

It is not a de Polignac number, because 221201222120211 - 2¹ = 221201222120209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221201222120251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25799065240 + ... + 25799073813.

It is an arithmetic number, because the mean of its divisors is an integer number (36892669423610).

Almost surely, 2^{221201222120211} is an apocalyptic number.

221201222120211 is a deficient number, since it is larger than the sum of its proper divisors (73940133268669).

221201222120211 is a wasteful number, since it uses less digits than its factorization.

221201222120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51598140485.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221201222120211 its reverse (112021222102122), we get a palindrome (333222444222333).

The spelling of 221201222120211 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred twenty-two million, one hundred twenty thousand, two hundred eleven".