223441421 has 12 divisors (see below), whose sum is σ = 275212188. Its totient is φ = 180254592.

The previous prime is 223441417. The next prime is 223441453. The reversal of 223441421 is 124144322.

It can be written as a sum of positive squares in 2 ways, for example, as 152646025 + 70795396 = 12355^2 + 8414^2 .

It is not a de Polignac number, because 223441421 - 2² = 223441417 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 (223441411) 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 11 ways as a sum of consecutive naturals, for example, 133286 + ... + 134951.

It is an arithmetic number, because the mean of its divisors is an integer number (22934349).

Almost surely, 2^223441421 is an apocalyptic number.

It is an amenable number.

223441421 is a deficient number, since it is larger than the sum of its proper divisors (51770767).

223441421 is a wasteful number, since it uses less digits than its factorization.

223441421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268268 (or 268261 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 223441421 is about 14947.9570844982. The cubic root of 223441421 is about 606.8125602441.

Adding to 223441421 its reverse (124144322), we get a palindrome (347585743).

It can be divided in two parts, 22 and 3441421, that added together give a palindrome (3441443).

The spelling of 223441421 in words is "two hundred twenty-three million, four hundred forty-one thousand, four hundred twenty-one".