2101130121 has 16 divisors (see below), whose sum is σ = 2893180928. Its totient is φ = 1354957200.

The previous prime is 2101130111. The next prime is 2101130149. The reversal of 2101130121 is 1210311012.

It is not a de Polignac number, because 2101130121 - 2⁵ = 2101130089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101130097 and 2101130106.

It is not an unprimeable number, because it can be changed into a prime (2101130111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300750 + ... + 307656.

It is an arithmetic number, because the mean of its divisors is an integer number (180823808).

Almost surely, 2^2101130121 is an apocalyptic number.

It is an amenable number.

2101130121 is a deficient number, since it is larger than the sum of its proper divisors (792050807).

2101130121 is a wasteful number, since it uses less digits than its factorization.

2101130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212.

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

The square root of 2101130121 is about 45838.0859220801. The cubic root of 2101130121 is about 1280.8088395712.

Adding to 2101130121 its reverse (1210311012), we get a palindrome (3311441133).

The spelling of 2101130121 in words is "two billion, one hundred one million, one hundred thirty thousand, one hundred twenty-one".