505231012434121 has 4 divisors (see below), whose sum is σ = 505233087880644. Its totient is φ = 505228936987600.

The previous prime is 505231012433989. The next prime is 505231012434131. The reversal of 505231012434121 is 121434210132505.

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 467626093112896 + 37604919321225 = 21624664^2 + 6132285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505231012434121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505231012434131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1037358070 + ... + 1037844991.

It is an arithmetic number, because the mean of its divisors is an integer number (126308271970161).

Almost surely, 2^{505231012434121} is an apocalyptic number.

It is an amenable number.

505231012434121 is a deficient number, since it is larger than the sum of its proper divisors (2075446523).

505231012434121 is a wasteful number, since it uses less digits than its factorization.

505231012434121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075446522.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 505231012434121 its reverse (121434210132505), we get a palindrome (626665222566626).

The spelling of 505231012434121 in words is "five hundred five trillion, two hundred thirty-one billion, twelve million, four hundred thirty-four thousand, one hundred twenty-one".