222041221 has 8 divisors (see below), whose sum is σ = 226740384. Its totient is φ = 217361040.

The previous prime is 222041213. The next prime is 222041227. The reversal of 222041221 is 122140222.

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 222041221 - 2³ = 222041213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222041195 and 222041204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222041227) 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, 20266 + ... + 29236.

It is an arithmetic number, because the mean of its divisors is an integer number (28342548).

Almost surely, 2^222041221 is an apocalyptic number.

It is an amenable number.

222041221 is a deficient number, since it is larger than the sum of its proper divisors (4699163).

222041221 is an equidigital number, since it uses as much as digits as its factorization.

222041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9491.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 222041221 is about 14901.0476477327. The cubic root of 222041221 is about 605.5423690844.

Adding to 222041221 its reverse (122140222), we get a palindrome (344181443).

Subtracting from 222041221 its reverse (122140222), we obtain a palindrome (99900999).

The spelling of 222041221 in words is "two hundred twenty-two million, forty-one thousand, two hundred twenty-one".