2021130253 has 4 divisors (see below), whose sum is σ = 2021394528. Its totient is φ = 2020865980.

The previous prime is 2021130227. The next prime is 2021130257. The reversal of 2021130253 is 3520311202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021130253 - 2¹⁷ = 2020999181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021130253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021130257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120313 + ... + 136078.

It is an arithmetic number, because the mean of its divisors is an integer number (505348632).

Almost surely, 2^2021130253 is an apocalyptic number.

It is an amenable number.

2021130253 is a deficient number, since it is larger than the sum of its proper divisors (264275).

2021130253 is an equidigital number, since it uses as much as digits as its factorization.

2021130253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264274.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2021130253 is about 44956.9822497018. The cubic root of 2021130253 is about 1264.3425899756.

Adding to 2021130253 its reverse (3520311202), we get a palindrome (5541441455).

The spelling of 2021130253 in words is "two billion, twenty-one million, one hundred thirty thousand, two hundred fifty-three".