212443022111321 has 2 divisors, whose sum is σ = 212443022111322. Its totient is φ = 212443022111320.

The previous prime is 212443022111297. The next prime is 212443022111443. The reversal of 212443022111321 is 123111220344212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204550636494400 + 7892385616921 = 14302120^2 + 2809339^2 .

It is a cyclic number.

It is not a de Polignac number, because 212443022111321 - 2³⁴ = 212425842242137 is a prime.

It is not a weakly prime, because it can be changed into another prime (212443022111821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106221511055660 + 106221511055661.

It is an arithmetic number, because the mean of its divisors is an integer number (106221511055661).

Almost surely, 2^{212443022111321} is an apocalyptic number.

It is an amenable number.

212443022111321 is a deficient number, since it is larger than the sum of its proper divisors (1).

212443022111321 is an equidigital number, since it uses as much as digits as its factorization.

212443022111321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 212443022111321 its reverse (123111220344212), we get a palindrome (335554242455533).

The spelling of 212443022111321 in words is "two hundred twelve trillion, four hundred forty-three billion, twenty-two million, one hundred eleven thousand, three hundred twenty-one".