50121121 has 4 divisors (see below), whose sum is σ = 50162500. Its totient is φ = 50079744.

The previous prime is 50121109. The next prime is 50121131. The reversal of 50121121 is 12112105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12112105 = 5 ⋅2422421.

It can be written as a sum of positive squares in 2 ways, for example, as 7349521 + 42771600 = 2711^2 + 6540^2 .

It is a cyclic number.

It is not a de Polignac number, because 50121121 - 2⁵ = 50121089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50121131) 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, 18816 + ... + 21313.

It is an arithmetic number, because the mean of its divisors is an integer number (12540625).

Almost surely, 2^50121121 is an apocalyptic number.

It is an amenable number.

50121121 is a deficient number, since it is larger than the sum of its proper divisors (41379).

50121121 is a wasteful number, since it uses less digits than its factorization.

50121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41378.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 50121121 is about 7079.6271794495. The cubic root of 50121121 is about 368.7003857025.

Adding to 50121121 its reverse (12112105), we get a palindrome (62233226).

The spelling of 50121121 in words is "fifty million, one hundred twenty-one thousand, one hundred twenty-one".