505121215411021 has 8 divisors (see below), whose sum is σ = 551238902604000. Its totient is φ = 459036457668240.

The previous prime is 505121215410991. The next prime is 505121215411121. The reversal of 505121215411021 is 120114512121505.

It is a happy number.

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 505121215411021 - 2¹⁹ = 505121214886733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505121215411121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8232330471 + ... + 8232391828.

It is an arithmetic number, because the mean of its divisors is an integer number (68904862825500).

Almost surely, 2^{505121215411021} is an apocalyptic number.

It is an amenable number.

505121215411021 is a deficient number, since it is larger than the sum of its proper divisors (46117687192979).

505121215411021 is a wasteful number, since it uses less digits than its factorization.

505121215411021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16464725099.

The product of its (nonzero) digits is 4000, while the sum is 31.

Adding to 505121215411021 its reverse (120114512121505), we get a palindrome (625235727532526).

The spelling of 505121215411021 in words is "five hundred five trillion, one hundred twenty-one billion, two hundred fifteen million, four hundred eleven thousand, twenty-one".