505050340400221 has 32 divisors (see below), whose sum is σ = 631222760712960. Its totient is φ = 392577244876800.

The previous prime is 505050340400219. The next prime is 505050340400311. The reversal of 505050340400221 is 122004043050505.

It is a cyclic number.

It is not a de Polignac number, because 505050340400221 - 2¹ = 505050340400219 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 (505050340400821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3469227585 + ... + 3469373161.

It is an arithmetic number, because the mean of its divisors is an integer number (19725711272280).

Almost surely, 2^{505050340400221} is an apocalyptic number.

It is an amenable number.

505050340400221 is a deficient number, since it is larger than the sum of its proper divisors (126172420312739).

505050340400221 is a wasteful number, since it uses less digits than its factorization.

505050340400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256165.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 505050340400221 its reverse (122004043050505), we get a palindrome (627054383450726).

The spelling of 505050340400221 in words is "five hundred five trillion, fifty billion, three hundred forty million, four hundred thousand, two hundred twenty-one".