2133242021 has 2 divisors, whose sum is σ = 2133242022. Its totient is φ = 2133242020.

The previous prime is 2133242009. The next prime is 2133242039. The reversal of 2133242021 is 1202423312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1278849121 + 854392900 = 35761^2 + 29230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133242021 - 2¹⁰ = 2133240997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2133241984 and 2133242002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133242051) 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, 1066621010 + 1066621011.

It is an arithmetic number, because the mean of its divisors is an integer number (1066621011).

Almost surely, 2^2133242021 is an apocalyptic number.

It is an amenable number.

2133242021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133242021 is an equidigital number, since it uses as much as digits as its factorization.

2133242021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2133242021 is about 46187.0330395881. The cubic root of 2133242021 is about 1287.3008123187.

Adding to 2133242021 its reverse (1202423312), we get a palindrome (3335665333).

The spelling of 2133242021 in words is "two billion, one hundred thirty-three million, two hundred forty-two thousand, twenty-one".