2853871221 has 4 divisors (see below), whose sum is σ = 3805161632. Its totient is φ = 1902580812.

The previous prime is 2853871219. The next prime is 2853871259. The reversal of 2853871221 is 1221783582.

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 not a de Polignac number, because 2853871221 - 2¹ = 2853871219 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 2853871221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2853871261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475645201 + ... + 475645206.

It is an arithmetic number, because the mean of its divisors is an integer number (951290408).

Almost surely, 2^2853871221 is an apocalyptic number.

It is an amenable number.

2853871221 is a deficient number, since it is larger than the sum of its proper divisors (951290411).

2853871221 is an equidigital number, since it uses as much as digits as its factorization.

2853871221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951290410.

The product of its digits is 53760, while the sum is 39.

The square root of 2853871221 is about 53421.6362628477. The cubic root of 2853871221 is about 1418.4415920781.

The spelling of 2853871221 in words is "two billion, eight hundred fifty-three million, eight hundred seventy-one thousand, two hundred twenty-one".