203230002121 has 2 divisors, whose sum is σ = 203230002122. Its totient is φ = 203230002120.

The previous prime is 203230002049. The next prime is 203230002133. The reversal of 203230002121 is 121200032302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198973092096 + 4256910025 = 446064^2 + 65245^2 .

It is a cyclic number.

It is not a de Polignac number, because 203230002121 - 2²³ = 203221613513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203230002095 and 203230002104.

It is not a weakly prime, because it can be changed into another prime (203230003121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101615001060 + 101615001061.

It is an arithmetic number, because the mean of its divisors is an integer number (101615001061).

Almost surely, 2^203230002121 is an apocalyptic number.

It is an amenable number.

203230002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

203230002121 is an equidigital number, since it uses as much as digits as its factorization.

203230002121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 203230002121 its reverse (121200032302), we get a palindrome (324430034423).

The spelling of 203230002121 in words is "two hundred three billion, two hundred thirty million, two thousand, one hundred twenty-one".