203030221 has 8 divisors (see below), whose sum is σ = 204926400. Its totient is φ = 201141600.

The previous prime is 203030203. The next prime is 203030239. The reversal of 203030221 is 122030302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (203030203) and next prime (203030239).

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

It is a cyclic number.

It is not a de Polignac number, because 203030221 - 2¹⁷ = 202899149 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 (203030291) 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 7 ways as a sum of consecutive naturals, for example, 61665 + ... + 64873.

It is an arithmetic number, because the mean of its divisors is an integer number (25615800).

Almost surely, 2^203030221 is an apocalyptic number.

It is an amenable number.

203030221 is a deficient number, since it is larger than the sum of its proper divisors (1896179).

203030221 is a wasteful number, since it uses less digits than its factorization.

203030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 203030221 is about 14248.8673584956. The cubic root of 203030221 is about 587.7422291317.

Adding to 203030221 its reverse (122030302), we get a palindrome (325060523).

The spelling of 203030221 in words is "two hundred three million, thirty thousand, two hundred twenty-one".