222102221 has 8 divisors (see below), whose sum is σ = 242429088. Its totient is φ = 201798000.

The previous prime is 222102211. The next prime is 222102233. The reversal of 222102221 is 122201222.

222102221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222102221 - 2¹⁰ = 222101197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222102196 and 222102205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102211) 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, 19886 + ... + 28976.

It is an arithmetic number, because the mean of its divisors is an integer number (30303636).

Almost surely, 2^222102221 is an apocalyptic number.

It is an amenable number.

222102221 is a deficient number, since it is larger than the sum of its proper divisors (20326867).

222102221 is a wasteful number, since it uses less digits than its factorization.

222102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11323.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 222102221 is about 14903.0943431222. The cubic root of 222102221 is about 605.5978163002.

Adding to 222102221 its reverse (122201222), we get a palindrome (344303443).

Subtracting from 222102221 its reverse (122201222), we obtain a palindrome (99900999).

The spelling of 222102221 in words is "two hundred twenty-two million, one hundred two thousand, two hundred twenty-one".