2823180221 has 4 divisors (see below), whose sum is σ = 2823344700. Its totient is φ = 2823015744.

The previous prime is 2823180197. The next prime is 2823180263. The reversal of 2823180221 is 1220813282.

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 575472121 + 2247708100 = 23989^2 + 47410^2 .

It is a cyclic number.

It is not a de Polignac number, because 2823180221 - 2¹⁰ = 2823179197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2823180271) 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, 53036 + ... + 91973.

It is an arithmetic number, because the mean of its divisors is an integer number (705836175).

Almost surely, 2^2823180221 is an apocalyptic number.

It is an amenable number.

2823180221 is a deficient number, since it is larger than the sum of its proper divisors (164479).

2823180221 is a wasteful number, since it uses less digits than its factorization.

2823180221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164478.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 2823180221 is about 53133.6072650822. The cubic root of 2823180221 is about 1413.3385371172.

The spelling of 2823180221 in words is "two billion, eight hundred twenty-three million, one hundred eighty thousand, two hundred twenty-one".