50115204221 has 4 divisors (see below), whose sum is σ = 51731823744. Its totient is φ = 48498584700.

The previous prime is 50115204211. The next prime is 50115204277. The reversal of 50115204221 is 12240251105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50115204221 - 2²² = 50111009917 is a prime.

It is a super-2 number, since 2×50115204221² (a number of 22 digits) contains 22 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 (50115204211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808309715 + ... + 808309776.

It is an arithmetic number, because the mean of its divisors is an integer number (12932955936).

Almost surely, 2^50115204221 is an apocalyptic number.

It is an amenable number.

50115204221 is a deficient number, since it is larger than the sum of its proper divisors (1616619523).

50115204221 is a wasteful number, since it uses less digits than its factorization.

50115204221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616619522.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 50115204221 its reverse (12240251105), we get a palindrome (62355455326).

The spelling of 50115204221 in words is "fifty billion, one hundred fifteen million, two hundred four thousand, two hundred twenty-one".