50121021 has 8 divisors (see below), whose sum is σ = 66911040. Its totient is φ = 33372512.

The previous prime is 50121007. The next prime is 50121023. The reversal of 50121021 is 12012105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50121021 - 2⁶ = 50120957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50120988 and 50121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50121023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7440 + ... + 12473.

It is an arithmetic number, because the mean of its divisors is an integer number (8363880).

Almost surely, 2^50121021 is an apocalyptic number.

It is an amenable number.

50121021 is a deficient number, since it is larger than the sum of its proper divisors (16790019).

50121021 is a wasteful number, since it uses less digits than its factorization.

50121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20755.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 50121021 is about 7079.6201169272. The cubic root of 50121021 is about 368.7001404961.

Adding to 50121021 its reverse (12012105), we get a palindrome (62133126).

The spelling of 50121021 in words is "fifty million, one hundred twenty-one thousand, twenty-one".