221022102222211 has 4 divisors (see below), whose sum is σ = 230631758840592. Its totient is φ = 211412445603832.

The previous prime is 221022102222179. The next prime is 221022102222263. The reversal of 221022102222211 is 112222201220122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221022102222211 - 2⁵ = 221022102222179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221022102223211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4804828309156 + ... + 4804828309201.

It is an arithmetic number, because the mean of its divisors is an integer number (57657939710148).

Almost surely, 2^{221022102222211} is an apocalyptic number.

221022102222211 is a deficient number, since it is larger than the sum of its proper divisors (9609656618381).

221022102222211 is an equidigital number, since it uses as much as digits as its factorization.

221022102222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9609656618380.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221022102222211 its reverse (112222201220122), we get a palindrome (333244303442333).

The spelling of 221022102222211 in words is "two hundred twenty-one trillion, twenty-two billion, one hundred two million, two hundred twenty-two thousand, two hundred eleven".