223441021 has 8 divisors (see below), whose sum is σ = 238843584. Its totient is φ = 208512480.

The previous prime is 223441019. The next prime is 223441033. The reversal of 223441021 is 120144322.

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

It is not a de Polignac number, because 223441021 - 2¹ = 223441019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223441021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223441921) 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, 117531 + ... + 119416.

It is an arithmetic number, because the mean of its divisors is an integer number (29855448).

Almost surely, 2^223441021 is an apocalyptic number.

It is an amenable number.

223441021 is a deficient number, since it is larger than the sum of its proper divisors (15402563).

223441021 is a wasteful number, since it uses less digits than its factorization.

223441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237011.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 223441021 is about 14947.9437047375. The cubic root of 223441021 is about 606.8121981430.

Adding to 223441021 its reverse (120144322), we get a palindrome (343585343).

The spelling of 223441021 in words is "two hundred twenty-three million, four hundred forty-one thousand, twenty-one".