223022021 has 2 divisors, whose sum is σ = 223022022. Its totient is φ = 223022020.

The previous prime is 223022011. The next prime is 223022069. The reversal of 223022021 is 120220322.

223022021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211557025 + 11464996 = 14545^2 + 3386^2 .

It is a cyclic number.

It is not a de Polignac number, because 223022021 - 2¹⁰ = 223020997 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 223021987 and 223022005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223022011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111511010 + 111511011.

It is an arithmetic number, because the mean of its divisors is an integer number (111511011).

Almost surely, 2^223022021 is an apocalyptic number.

It is an amenable number.

223022021 is a deficient number, since it is larger than the sum of its proper divisors (1).

223022021 is an equidigital number, since it uses as much as digits as its factorization.

223022021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 223022021 is about 14933.9218224819. The cubic root of 223022021 is about 606.4326596518.

Adding to 223022021 its reverse (120220322), we get a palindrome (343242343).

The spelling of 223022021 in words is "two hundred twenty-three million, twenty-two thousand, twenty-one".