222222102221 has 8 divisors (see below), whose sum is σ = 254011748160. Its totient is φ = 190443364128.

The previous prime is 222222102199. The next prime is 222222102227. The reversal of 222222102221 is 122201222222.

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 222222102221 - 2³⁰ = 221148360397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222222102193 and 222222102202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222102227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2683256 + ... + 2764833.

It is an arithmetic number, because the mean of its divisors is an integer number (31751468520).

Almost surely, 2^222222102221 is an apocalyptic number.

It is an amenable number.

222222102221 is a deficient number, since it is larger than the sum of its proper divisors (31789645939).

222222102221 is an equidigital number, since it uses as much as digits as its factorization.

222222102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5453923.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 222222102221 its reverse (122201222222), we get a palindrome (344423324443).

The spelling of 222222102221 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred two thousand, two hundred twenty-one".