200423221 has 4 divisors (see below), whose sum is σ = 200458944. Its totient is φ = 200387500.

The previous prime is 200423207. The next prime is 200423227. The reversal of 200423221 is 122324002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200423221 - 2⁹ = 200422709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200423195 and 200423204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200423227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7405 + ... + 21346.

It is an arithmetic number, because the mean of its divisors is an integer number (50114736).

Almost surely, 2^200423221 is an apocalyptic number.

It is an amenable number.

200423221 is a deficient number, since it is larger than the sum of its proper divisors (35723).

200423221 is an equidigital number, since it uses as much as digits as its factorization.

200423221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35722.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 200423221 is about 14157.0908381630. The cubic root of 200423221 is about 585.2157589221.

Adding to 200423221 its reverse (122324002), we get a palindrome (322747223).

The spelling of 200423221 in words is "two hundred million, four hundred twenty-three thousand, two hundred twenty-one".