223303221 has 6 divisors (see below), whose sum is σ = 322549110. Its totient is φ = 148868808.

The previous prime is 223303207. The next prime is 223303229. The reversal of 223303221 is 122303322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 192932100 + 30371121 = 13890^2 + 5511^2 .

It is not a de Polignac number, because 223303221 - 2¹¹ = 223301173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223303194 and 223303203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223303229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12405726 + ... + 12405743.

It is an arithmetic number, because the mean of its divisors is an integer number (53758185).

Almost surely, 2^223303221 is an apocalyptic number.

It is an amenable number.

223303221 is a deficient number, since it is larger than the sum of its proper divisors (99245889).

223303221 is a wasteful number, since it uses less digits than its factorization.

223303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24811475 (or 24811472 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 223303221 is about 14943.3336642129. Note that the first 3 decimals coincide. The cubic root of 223303221 is about 606.6874285787.

Adding to 223303221 its reverse (122303322), we get a palindrome (345606543).

The spelling of 223303221 in words is "two hundred twenty-three million, three hundred three thousand, two hundred twenty-one".