203030301121 has 4 divisors (see below), whose sum is σ = 203161036932. Its totient is φ = 202899565312.

The previous prime is 203030301119. The next prime is 203030301157. The reversal of 203030301121 is 121103030302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14027086096 + 189003215025 = 118436^2 + 434745^2 .

It is a cyclic number.

It is not a de Polignac number, because 203030301121 - 2¹ = 203030301119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203030301095 and 203030301104.

It is not an unprimeable number, because it can be changed into a prime (203030301161) 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 in 3 ways as a sum of consecutive naturals, for example, 65365576 + ... + 65368681.

It is an arithmetic number, because the mean of its divisors is an integer number (50790259233).

Almost surely, 2^203030301121 is an apocalyptic number.

It is an amenable number.

203030301121 is a deficient number, since it is larger than the sum of its proper divisors (130735811).

203030301121 is a wasteful number, since it uses less digits than its factorization.

203030301121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130735810.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 203030301121 its reverse (121103030302), we get a palindrome (324133331423).

The spelling of 203030301121 in words is "two hundred three billion, thirty million, three hundred one thousand, one hundred twenty-one".