221100222201211 has 8 divisors (see below), whose sum is σ = 226885445945424. Its totient is φ = 215333690618880.

The previous prime is 221100222201169. The next prime is 221100222201247. The reversal of 221100222201211 is 112102222001122.

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 221100222201211 - 2²⁹ = 221099685330299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221100222207211) 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, 4673016505 + ... + 4673063818.

It is an arithmetic number, because the mean of its divisors is an integer number (28360680743178).

Almost surely, 2^{221100222201211} is an apocalyptic number.

221100222201211 is a deficient number, since it is larger than the sum of its proper divisors (5785223744213).

221100222201211 is an equidigital number, since it uses as much as digits as its factorization.

221100222201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9346080941.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221100222201211 its reverse (112102222001122), we get a palindrome (333202444202333).

The spelling of 221100222201211 in words is "two hundred twenty-one trillion, one hundred billion, two hundred twenty-two million, two hundred one thousand, two hundred eleven".