50001001015221 has 12 divisors (see below), whose sum is σ = 72223881737280. Its totient is φ = 33333902090280.

The previous prime is 50001001015181. The next prime is 50001001015223. The reversal of 50001001015221 is 12251010010005.

50001001015221 is a `hidden beast` number, since 500 + 0 + 1 + 0 + 0 + 10 + 152 + 2 + 1 = 666.

It is not a de Polignac number, because 50001001015221 - 2⁹ = 50001001014709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50001001015194 and 50001001015203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50001001015223) 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 11 ways as a sum of consecutive naturals, for example, 4934445 + ... + 11151266.

It is an arithmetic number, because the mean of its divisors is an integer number (6018656811440).

Almost surely, 2^{50001001015221} is an apocalyptic number.

It is an amenable number.

50001001015221 is a deficient number, since it is larger than the sum of its proper divisors (22222880722059).

50001001015221 is a wasteful number, since it uses less digits than its factorization.

50001001015221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16431096 (or 16431093 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 50001001015221 its reverse (12251010010005), we get a palindrome (62252011025226).

The spelling of 50001001015221 in words is "fifty trillion, one billion, one million, fifteen thousand, two hundred twenty-one".