505212162421 has 8 divisors (see below), whose sum is σ = 526748497920. Its totient is φ = 483950175408.

The previous prime is 505212162419. The next prime is 505212162437. The reversal of 505212162421 is 124261212505.

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 505212162421 - 2¹ = 505212162419 is a prime.

It is a super-3 number, since 3×505212162421³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505212162401) 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 7 ways as a sum of consecutive naturals, for example, 68583361 + ... + 68590726.

It is an arithmetic number, because the mean of its divisors is an integer number (65843562240).

Almost surely, 2^505212162421 is an apocalyptic number.

It is an amenable number.

505212162421 is a deficient number, since it is larger than the sum of its proper divisors (21536335499).

505212162421 is a wasteful number, since it uses less digits than its factorization.

505212162421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137174243.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 505212162421 its reverse (124261212505), we get a palindrome (629473374926).

The spelling of 505212162421 in words is "five hundred five billion, two hundred twelve million, one hundred sixty-two thousand, four hundred twenty-one".