203130223121 has 8 divisors (see below), whose sum is σ = 232181566464. Its totient is φ = 174087064800.

The previous prime is 203130223091. The next prime is 203130223141. The reversal of 203130223121 is 121322031302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203130223121 - 2²² = 203126028817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203130223093 and 203130223102.

It is not an unprimeable number, because it can be changed into a prime (203130223141) 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 7 ways as a sum of consecutive naturals, for example, 1992980 + ... + 2092421.

It is an arithmetic number, because the mean of its divisors is an integer number (29022695808).

Almost surely, 2^203130223121 is an apocalyptic number.

It is an amenable number.

203130223121 is a deficient number, since it is larger than the sum of its proper divisors (29051343343).

203130223121 is an equidigital number, since it uses as much as digits as its factorization.

203130223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4092511.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203130223121 its reverse (121322031302), we get a palindrome (324452254423).

The spelling of 203130223121 in words is "two hundred three billion, one hundred thirty million, two hundred twenty-three thousand, one hundred twenty-one".