203302113121 has 2 divisors, whose sum is σ = 203302113122. Its totient is φ = 203302113120.

The previous prime is 203302113083. The next prime is 203302113137. The reversal of 203302113121 is 121311203302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198858024225 + 4444088896 = 445935^2 + 66664^2 .

It is a cyclic number.

It is not a de Polignac number, because 203302113121 - 2⁹ = 203302112609 is a prime.

It is not a weakly prime, because it can be changed into another prime (203302113151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101651056560 + 101651056561.

It is an arithmetic number, because the mean of its divisors is an integer number (101651056561).

Almost surely, 2^203302113121 is an apocalyptic number.

It is an amenable number.

203302113121 is a deficient number, since it is larger than the sum of its proper divisors (1).

203302113121 is an equidigital number, since it uses as much as digits as its factorization.

203302113121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 203302113121 its reverse (121311203302), we get a palindrome (324613316423).

The spelling of 203302113121 in words is "two hundred three billion, three hundred two million, one hundred thirteen thousand, one hundred twenty-one".