500001200001 has 48 divisors (see below), whose sum is σ = 753184111680. Its totient is φ = 331463819520.

The previous prime is 500001199993. The next prime is 500001200003. The reversal of 500001200001 is 100002100005.

It is a happy number.

It is not a de Polignac number, because 500001200001 - 2³ = 500001199993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (500001200003) 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 47 ways as a sum of consecutive naturals, for example, 45912565 + ... + 45923453.

It is an arithmetic number, because the mean of its divisors is an integer number (15691335660).

Almost surely, 2^500001200001 is an apocalyptic number.

It is an amenable number.

500001200001 is a deficient number, since it is larger than the sum of its proper divisors (253182911679).

500001200001 is a wasteful number, since it uses less digits than its factorization.

500001200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11948 (or 11936 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

Adding to 500001200001 its reverse (100002100005), we get a palindrome (600003300006).

The spelling of 500001200001 in words is "five hundred billion, one million, two hundred thousand, one".