500121556220117 has 16 divisors (see below), whose sum is σ = 543124215036480. Its totient is φ = 457771752547200.

The previous prime is 500121556220087. The next prime is 500121556220129. The reversal of 500121556220117 is 711022655121005.

It is a happy number.

It is not a de Polignac number, because 500121556220117 - 2¹⁸ = 500121555957973 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 (500121556222117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111539192 + ... + 115936337.

It is an arithmetic number, because the mean of its divisors is an integer number (33945263439780).

Almost surely, 2^{500121556220117} is an apocalyptic number.

It is an amenable number.

500121556220117 is a deficient number, since it is larger than the sum of its proper divisors (43002658816363).

500121556220117 is a wasteful number, since it uses less digits than its factorization.

500121556220117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227476964.

The product of its (nonzero) digits is 42000, while the sum is 38.

The spelling of 500121556220117 in words is "five hundred trillion, one hundred twenty-one billion, five hundred fifty-six million, two hundred twenty thousand, one hundred seventeen".