212211133321321 has 2 divisors, whose sum is σ = 212211133321322. Its totient is φ = 212211133321320.

The previous prime is 212211133321303. The next prime is 212211133321331. The reversal of 212211133321321 is 123123331112212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107041267905625 + 105169865415696 = 10346075^2 + 10255236^2 .

It is a cyclic number.

It is not a de Polignac number, because 212211133321321 - 2¹⁹ = 212211132797033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212211133321321.

It is not a weakly prime, because it can be changed into another prime (212211133321331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105566660660 + 106105566660661.

It is an arithmetic number, because the mean of its divisors is an integer number (106105566660661).

Almost surely, 2^{212211133321321} is an apocalyptic number.

It is an amenable number.

212211133321321 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211133321321 is an equidigital number, since it uses as much as digits as its factorization.

212211133321321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

Adding to 212211133321321 its reverse (123123331112212), we get a palindrome (335334464433533).

The spelling of 212211133321321 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred thirty-three million, three hundred twenty-one thousand, three hundred twenty-one".