2132444221 has 2 divisors, whose sum is σ = 2132444222. Its totient is φ = 2132444220.

The previous prime is 2132444219. The next prime is 2132444243. The reversal of 2132444221 is 1224442312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1208952900 + 923491321 = 34770^2 + 30389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132444221 - 2¹ = 2132444219 is a prime.

Together with 2132444219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2132444201) 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 as a sum of consecutive naturals, namely, 1066222110 + 1066222111.

It is an arithmetic number, because the mean of its divisors is an integer number (1066222111).

Almost surely, 2^2132444221 is an apocalyptic number.

It is an amenable number.

2132444221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132444221 is an equidigital number, since it uses as much as digits as its factorization.

2132444221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 25.

The square root of 2132444221 is about 46178.3956087693. The cubic root of 2132444221 is about 1287.1403153485.

Adding to 2132444221 its reverse (1224442312), we get a palindrome (3356886533).

The spelling of 2132444221 in words is "two billion, one hundred thirty-two million, four hundred forty-four thousand, two hundred twenty-one".