13212201112021 has 2 divisors, whose sum is σ = 13212201112022. Its totient is φ = 13212201112020.

The previous prime is 13212201112013. The next prime is 13212201112057. The reversal of 13212201112021 is 12021110221231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13205127460996 + 7073651025 = 3633886^2 + 84105^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212201112021 - 2³ = 13212201112013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13212201112021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13212201118021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606100556010 + 6606100556011.

It is an arithmetic number, because the mean of its divisors is an integer number (6606100556011).

Almost surely, 2^{13212201112021} is an apocalyptic number.

It is an amenable number.

13212201112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212201112021 is an equidigital number, since it uses as much as digits as its factorization.

13212201112021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 13212201112021 its reverse (12021110221231), we get a palindrome (25233311333252).

The spelling of 13212201112021 in words is "thirteen trillion, two hundred twelve billion, two hundred one million, one hundred twelve thousand, twenty-one".