203414221 has 2 divisors, whose sum is σ = 203414222. Its totient is φ = 203414220.

The previous prime is 203414213. The next prime is 203414251. The reversal of 203414221 is 122414302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112593321 + 90820900 = 10611^2 + 9530^2 .

It is a cyclic number.

It is not a de Polignac number, because 203414221 - 2³ = 203414213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203414201) 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 as a sum of consecutive naturals, namely, 101707110 + 101707111.

It is an arithmetic number, because the mean of its divisors is an integer number (101707111).

Almost surely, 2^203414221 is an apocalyptic number.

It is an amenable number.

203414221 is a deficient number, since it is larger than the sum of its proper divisors (1).

203414221 is an equidigital number, since it uses as much as digits as its factorization.

203414221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 203414221 is about 14262.3357483969. The cubic root of 203414221 is about 588.1125366923.

Adding to 203414221 its reverse (122414302), we get a palindrome (325828523).

The spelling of 203414221 in words is "two hundred three million, four hundred fourteen thousand, two hundred twenty-one".