203340143221 has 2 divisors, whose sum is σ = 203340143222. Its totient is φ = 203340143220.

The previous prime is 203340143119. The next prime is 203340143273. The reversal of 203340143221 is 122341043302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142140310225 + 61199832996 = 377015^2 + 247386^2 .

It is a cyclic number.

It is not a de Polignac number, because 203340143221 - 2²⁵ = 203306588789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203340143021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101670071610 + 101670071611.

It is an arithmetic number, because the mean of its divisors is an integer number (101670071611).

Almost surely, 2^203340143221 is an apocalyptic number.

It is an amenable number.

203340143221 is a deficient number, since it is larger than the sum of its proper divisors (1).

203340143221 is an equidigital number, since it uses as much as digits as its factorization.

203340143221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 203340143221 its reverse (122341043302), we get a palindrome (325681186523).

The spelling of 203340143221 in words is "two hundred three billion, three hundred forty million, one hundred forty-three thousand, two hundred twenty-one".