223421201 has 4 divisors (see below), whose sum is σ = 223452132. Its totient is φ = 223390272.

The previous prime is 223421189. The next prime is 223421251. The reversal of 223421201 is 102124322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 69288976 + 154132225 = 8324^2 + 12415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223421201 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 223421201.

It is not an unprimeable number, because it can be changed into a prime (223421251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781 + ... + 21213.

It is an arithmetic number, because the mean of its divisors is an integer number (55863033).

Almost surely, 2^223421201 is an apocalyptic number.

It is an amenable number.

223421201 is a deficient number, since it is larger than the sum of its proper divisors (30931).

223421201 is a wasteful number, since it uses less digits than its factorization.

223421201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30930.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 223421201 is about 14947.2807225930. The cubic root of 223421201 is about 606.7942554911.

Adding to 223421201 its reverse (102124322), we get a palindrome (325545523).

The spelling of 223421201 in words is "two hundred twenty-three million, four hundred twenty-one thousand, two hundred one".