13211000233021 has 2 divisors, whose sum is σ = 13211000233022. Its totient is φ = 13211000233020.

The previous prime is 13211000233019. The next prime is 13211000233069. The reversal of 13211000233021 is 12033200011231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13046464536121 + 164535696900 = 3611989^2 + 405630^2 .

It is a cyclic number.

It is not a de Polignac number, because 13211000233021 - 2¹ = 13211000233019 is a prime.

Together with 13211000233019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13211000233021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13211000233001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605500116510 + 6605500116511.

It is an arithmetic number, because the mean of its divisors is an integer number (6605500116511).

Almost surely, 2^{13211000233021} is an apocalyptic number.

It is an amenable number.

13211000233021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211000233021 is an equidigital number, since it uses as much as digits as its factorization.

13211000233021 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 13211000233021 its reverse (12033200011231), we get a palindrome (25244200244252).

The spelling of 13211000233021 in words is "thirteen trillion, two hundred eleven billion, two hundred thirty-three thousand, twenty-one".