203121330001 has 4 divisors (see below), whose sum is σ = 203134105600. Its totient is φ = 203108554404.

The previous prime is 203121329987. The next prime is 203121330017. The reversal of 203121330001 is 100033121302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203121330001 - 2²⁹ = 202584459089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203121330901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6363921 + ... + 6395758.

It is an arithmetic number, because the mean of its divisors is an integer number (50783526400).

Almost surely, 2^203121330001 is an apocalyptic number.

It is an amenable number.

203121330001 is a deficient number, since it is larger than the sum of its proper divisors (12775599).

203121330001 is a wasteful number, since it uses less digits than its factorization.

203121330001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12775598.

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

Adding to 203121330001 its reverse (100033121302), we get a palindrome (303154451303).

The spelling of 203121330001 in words is "two hundred three billion, one hundred twenty-one million, three hundred thirty thousand, one".