203130121223 has 16 divisors (see below), whose sum is σ = 213300967680. Its totient is φ = 193439806648.

The previous prime is 203130121211. The next prime is 203130121283. The reversal of 203130121223 is 322121031302.

It is not a de Polignac number, because 203130121223 - 2¹⁰ = 203130120199 is a prime.

It is a super-2 number, since 2×203130121223² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203130121195 and 203130121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203130121283) 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 in 15 ways as a sum of consecutive naturals, for example, 2725136 + ... + 2798682.

It is an arithmetic number, because the mean of its divisors is an integer number (13331310480).

Almost surely, 2^203130121223 is an apocalyptic number.

203130121223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

203130121223 is a deficient number, since it is larger than the sum of its proper divisors (10170846457).

203130121223 is an frugal number, since it uses more digits than its factorization.

203130121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73843 (or 73797 counting only the distinct ones).

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

Adding to 203130121223 its reverse (322121031302), we get a palindrome (525251152525).

The spelling of 203130121223 in words is "two hundred three billion, one hundred thirty million, one hundred twenty-one thousand, two hundred twenty-three".