223330221 has 6 divisors (see below), whose sum is σ = 322588110. Its totient is φ = 148886808.

The previous prime is 223330213. The next prime is 223330223. The reversal of 223330221 is 122033322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 222308100 + 1022121 = 14910^2 + 1011^2 .

It is not a de Polignac number, because 223330221 - 2³ = 223330213 is a prime.

It is a super-2 number, since 2×223330221² = 99752775223817682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 223330194 and 223330203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223330223) 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, 12407226 + ... + 12407243.

It is an arithmetic number, because the mean of its divisors is an integer number (53764685).

Almost surely, 2^223330221 is an apocalyptic number.

It is an amenable number.

223330221 is a deficient number, since it is larger than the sum of its proper divisors (99257889).

223330221 is a wasteful number, since it uses less digits than its factorization.

223330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24814475 (or 24814472 counting only the distinct ones).

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

The square root of 223330221 is about 14944.2370497794. The cubic root of 223330221 is about 606.7118794880.

Adding to 223330221 its reverse (122033322), we get a palindrome (345363543).

The spelling of 223330221 in words is "two hundred twenty-three million, three hundred thirty thousand, two hundred twenty-one".