223033232221 has 2 divisors, whose sum is σ = 223033232222. Its totient is φ = 223033232220.

The previous prime is 223033232203. The next prime is 223033232237. The reversal of 223033232221 is 122232330322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202374919321 + 20658312900 = 449861^2 + 143730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223033232221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223033232251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111516616110 + 111516616111.

It is an arithmetic number, because the mean of its divisors is an integer number (111516616111).

Almost surely, 2^223033232221 is an apocalyptic number.

It is an amenable number.

223033232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

223033232221 is an equidigital number, since it uses as much as digits as its factorization.

223033232221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 223033232221 its reverse (122232330322), we get a palindrome (345265562543).

The spelling of 223033232221 in words is "two hundred twenty-three billion, thirty-three million, two hundred thirty-two thousand, two hundred twenty-one".