2120054161 has 4 divisors (see below), whose sum is σ = 2121797412. Its totient is φ = 2118310912.

The previous prime is 2120054149. The next prime is 2120054179. The reversal of 2120054161 is 1614500212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 708624400 + 1411429761 = 26620^2 + 37569^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120054161 - 2¹³ = 2120045969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120052161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869800 + ... + 872233.

It is an arithmetic number, because the mean of its divisors is an integer number (530449353).

Almost surely, 2^2120054161 is an apocalyptic number.

It is an amenable number.

2120054161 is a deficient number, since it is larger than the sum of its proper divisors (1743251).

2120054161 is a wasteful number, since it uses less digits than its factorization.

2120054161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743250.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2120054161 is about 46044.0458800049. The cubic root of 2120054161 is about 1284.6425973890.

Adding to 2120054161 its reverse (1614500212), we get a palindrome (3734554373).

The spelling of 2120054161 in words is "two billion, one hundred twenty million, fifty-four thousand, one hundred sixty-one".