223443121 has 8 divisors (see below), whose sum is σ = 258094944. Its totient is φ = 191181120.

The previous prime is 223443109. The next prime is 223443127. The reversal of 223443121 is 121344322.

223443121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223443121 - 2¹¹ = 223441073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223443092 and 223443101.

It is not an unprimeable number, because it can be changed into a prime (223443127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597255 + ... + 597628.

It is an arithmetic number, because the mean of its divisors is an integer number (32261868).

Almost surely, 2^223443121 is an apocalyptic number.

It is an amenable number.

223443121 is a deficient number, since it is larger than the sum of its proper divisors (34651823).

223443121 is a wasteful number, since it uses less digits than its factorization.

223443121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194911.

The product of its digits is 1152, while the sum is 22.

The square root of 223443121 is about 14948.0139483478. The cubic root of 223443121 is about 606.8140991691.

Adding to 223443121 its reverse (121344322), we get a palindrome (344787443).

It can be divided in two parts, 223 and 443121, that added together give a palindrome (443344).

The spelling of 223443121 in words is "two hundred twenty-three million, four hundred forty-three thousand, one hundred twenty-one".