212443423043387 has 2 divisors, whose sum is σ = 212443423043388. Its totient is φ = 212443423043386.

The previous prime is 212443423043309. The next prime is 212443423043407. The reversal of 212443423043387 is 783340324344212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212443423043387 - 2⁴⁶ = 142074678865723 is a prime.

It is not a weakly prime, because it can be changed into another prime (212443423043587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106221711521693 + 106221711521694.

It is an arithmetic number, because the mean of its divisors is an integer number (106221711521694).

Almost surely, 2^{212443423043387} is an apocalyptic number.

212443423043387 is a deficient number, since it is larger than the sum of its proper divisors (1).

212443423043387 is an equidigital number, since it uses as much as digits as its factorization.

212443423043387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 50.

Adding to 212443423043387 its reverse (783340324344212), we get a palindrome (995783747387599).

The spelling of 212443423043387 in words is "two hundred twelve trillion, four hundred forty-three billion, four hundred twenty-three million, forty-three thousand, three hundred eighty-seven".