223021143 has 6 divisors (see below), whose sum is σ = 322141664. Its totient is φ = 148680756.

The previous prime is 223021093. The next prime is 223021151. The reversal of 223021143 is 341120322.

It is not a de Polignac number, because 223021143 - 2⁹ = 223020631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223021193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12390055 + ... + 12390072.

Almost surely, 2^223021143 is an apocalyptic number.

223021143 is a deficient number, since it is larger than the sum of its proper divisors (99120521).

223021143 is a wasteful number, since it uses less digits than its factorization.

223021143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24780133 (or 24780130 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 223021143 is about 14933.8924262899. The cubic root of 223021143 is about 606.4318638431.

Adding to 223021143 its reverse (341120322), we get a palindrome (564141465).

The spelling of 223021143 in words is "two hundred twenty-three million, twenty-one thousand, one hundred forty-three".