222321221211 has 4 divisors (see below), whose sum is σ = 296428294952. Its totient is φ = 148214147472.

The previous prime is 222321221189. The next prime is 222321221231. The reversal of 222321221211 is 112122123222.

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

It is not a de Polignac number, because 222321221211 - 2¹⁵ = 222321188443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222321221231) 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, 37053536866 + ... + 37053536871.

It is an arithmetic number, because the mean of its divisors is an integer number (74107073738).

Almost surely, 2^222321221211 is an apocalyptic number.

222321221211 is a deficient number, since it is larger than the sum of its proper divisors (74107073741).

222321221211 is an equidigital number, since it uses as much as digits as its factorization.

222321221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74107073740.

The product of its digits is 384, while the sum is 21.

Adding to 222321221211 its reverse (112122123222), we get a palindrome (334443344433).

The spelling of 222321221211 in words is "two hundred twenty-two billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".