203242141320121 has 2 divisors, whose sum is σ = 203242141320122. Its totient is φ = 203242141320120.

The previous prime is 203242141320103. The next prime is 203242141320151. The reversal of 203242141320121 is 121023141242302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119328095587600 + 83914045732521 = 10923740^2 + 9160461^2 .

It is a cyclic number.

It is not a de Polignac number, because 203242141320121 - 2⁷ = 203242141319993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203242141320121.

It is not a weakly prime, because it can be changed into another prime (203242141320151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101621070660060 + 101621070660061.

It is an arithmetic number, because the mean of its divisors is an integer number (101621070660061).

Almost surely, 2^{203242141320121} is an apocalyptic number.

It is an amenable number.

203242141320121 is a deficient number, since it is larger than the sum of its proper divisors (1).

203242141320121 is an equidigital number, since it uses as much as digits as its factorization.

203242141320121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 203242141320121 its reverse (121023141242302), we get a palindrome (324265282562423).

The spelling of 203242141320121 in words is "two hundred three trillion, two hundred forty-two billion, one hundred forty-one million, three hundred twenty thousand, one hundred twenty-one".