223621201 has 4 divisors (see below), whose sum is σ = 224756532. Its totient is φ = 222485872.

The previous prime is 223621193. The next prime is 223621217. The reversal of 223621201 is 102126322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 184932801 + 38688400 = 13599^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 223621201 - 2³ = 223621193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223621261) 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, 567370 + ... + 567763.

It is an arithmetic number, because the mean of its divisors is an integer number (56189133).

Almost surely, 2^223621201 is an apocalyptic number.

It is an amenable number.

223621201 is a deficient number, since it is larger than the sum of its proper divisors (1135331).

223621201 is a wasteful number, since it uses less digits than its factorization.

223621201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135330.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 223621201 is about 14953.9694061477. The cubic root of 223621201 is about 606.9752628683.

Adding to 223621201 its reverse (102126322), we get a palindrome (325747523).

The spelling of 223621201 in words is "two hundred twenty-three million, six hundred twenty-one thousand, two hundred one".