2021130205 has 16 divisors (see below), whose sum is σ = 2517061680. Its totient is φ = 1556126208.

The previous prime is 2021130179. The next prime is 2021130227. The reversal of 2021130205 is 5020311202.

It can be written as a sum of positive squares in 8 ways, for example, as 267028281 + 1754101924 = 16341^2 + 41882^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021130205 - 2⁵ = 2021130173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23119 + ... + 67651.

It is an arithmetic number, because the mean of its divisors is an integer number (157316355).

Almost surely, 2^2021130205 is an apocalyptic number.

It is an amenable number.

2021130205 is a deficient number, since it is larger than the sum of its proper divisors (495931475).

2021130205 is a wasteful number, since it uses less digits than its factorization.

2021130205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44880.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2021130205 is about 44956.9817158581. The cubic root of 2021130205 is about 1264.3425799666.

Adding to 2021130205 its reverse (5020311202), we get a palindrome (7041441407).

The spelling of 2021130205 in words is "two billion, twenty-one million, one hundred thirty thousand, two hundred five".