223134221 has 2 divisors, whose sum is σ = 223134222. Its totient is φ = 223134220.

The previous prime is 223134203. The next prime is 223134253. The reversal of 223134221 is 122431322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196981225 + 26152996 = 14035^2 + 5114^2 .

It is a cyclic number.

It is not a de Polignac number, because 223134221 - 2¹⁸ = 222872077 is a prime.

It is a super-3 number, since 3×223134221³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223134193 and 223134202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223134281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111567110 + 111567111.

It is an arithmetic number, because the mean of its divisors is an integer number (111567111).

Almost surely, 2^223134221 is an apocalyptic number.

It is an amenable number.

223134221 is a deficient number, since it is larger than the sum of its proper divisors (1).

223134221 is an equidigital number, since it uses as much as digits as its factorization.

223134221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 20.

The square root of 223134221 is about 14937.6778985222. The cubic root of 223134221 is about 606.5343392033.

Adding to 223134221 its reverse (122431322), we get a palindrome (345565543).

The spelling of 223134221 in words is "two hundred twenty-three million, one hundred thirty-four thousand, two hundred twenty-one".