213132301021 has 2 divisors, whose sum is σ = 213132301022. Its totient is φ = 213132301020.

The previous prime is 213132301003. The next prime is 213132301033. The reversal of 213132301021 is 120103231312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180297048996 + 32835252025 = 424614^2 + 181205^2 .

It is a cyclic number.

It is not a de Polignac number, because 213132301021 - 2⁵ = 213132300989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213132301021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213132308021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106566150510 + 106566150511.

It is an arithmetic number, because the mean of its divisors is an integer number (106566150511).

Almost surely, 2^213132301021 is an apocalyptic number.

It is an amenable number.

213132301021 is a deficient number, since it is larger than the sum of its proper divisors (1).

213132301021 is an equidigital number, since it uses as much as digits as its factorization.

213132301021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213132301021 its reverse (120103231312), we get a palindrome (333235532333).

The spelling of 213132301021 in words is "two hundred thirteen billion, one hundred thirty-two million, three hundred one thousand, twenty-one".