223332221 has 4 divisors (see below), whose sum is σ = 255236832. Its totient is φ = 191427612.

The previous prime is 223332209. The next prime is 223332227. The reversal of 223332221 is 122233322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122233322 = 2 ⋅61116661.

It is a cyclic number.

It is not a de Polignac number, because 223332221 - 2²⁶ = 156223357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223332193 and 223332202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223332227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15952295 + ... + 15952308.

It is an arithmetic number, because the mean of its divisors is an integer number (63809208).

Almost surely, 2^223332221 is an apocalyptic number.

It is an amenable number.

223332221 is a deficient number, since it is larger than the sum of its proper divisors (31904611).

223332221 is an equidigital number, since it uses as much as digits as its factorization.

223332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31904610.

The product of its digits is 864, while the sum is 20.

The square root of 223332221 is about 14944.3039650564. The cubic root of 223332221 is about 606.7136905881.

Adding to 223332221 its reverse (122233322), we get a palindrome (345565543).

The spelling of 223332221 in words is "two hundred twenty-three million, three hundred thirty-two thousand, two hundred twenty-one".