222221011211 has 4 divisors (see below), whose sum is σ = 222244166424. Its totient is φ = 222197856000.

The previous prime is 222221011153. The next prime is 222221011253. The reversal of 222221011211 is 112110122222.

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 222221011211 - 2³⁴ = 205041142027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222221011211.

It is not an unprimeable number, because it can be changed into a prime (222221011291) 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, 11563205 + ... + 11582406.

It is an arithmetic number, because the mean of its divisors is an integer number (55561041606).

Almost surely, 2^222221011211 is an apocalyptic number.

222221011211 is a deficient number, since it is larger than the sum of its proper divisors (23155213).

222221011211 is an equidigital number, since it uses as much as digits as its factorization.

222221011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23155212.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222221011211 its reverse (112110122222), we get a palindrome (334331133433).

The spelling of 222221011211 in words is "two hundred twenty-two billion, two hundred twenty-one million, eleven thousand, two hundred eleven".