50012111121 has 12 divisors (see below), whose sum is σ = 77569805232. Its totient is φ = 28578349128.

The previous prime is 50012111111. The next prime is 50012111251. The reversal of 50012111121 is 12111121005.

It is not a de Polignac number, because 50012111121 - 2¹³ = 50012102929 is a prime.

It is a super-2 number, since 2×50012111121² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50012111121.

It is not an unprimeable number, because it can be changed into a prime (50012111111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170109075 + ... + 170109368.

It is an arithmetic number, because the mean of its divisors is an integer number (6464150436).

Almost surely, 2^50012111121 is an apocalyptic number.

It is an amenable number.

50012111121 is a deficient number, since it is larger than the sum of its proper divisors (27557694111).

50012111121 is a wasteful number, since it uses less digits than its factorization.

50012111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340218460 (or 340218453 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 50012111121 its reverse (12111121005), we get a palindrome (62123232126).

The spelling of 50012111121 in words is "fifty billion, twelve million, one hundred eleven thousand, one hundred twenty-one".