212442320009 has 2 divisors, whose sum is σ = 212442320010. Its totient is φ = 212442320008.

The previous prime is 212442319993. The next prime is 212442320023. The reversal of 212442320009 is 900023244212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140160384400 + 72281935609 = 374380^2 + 268853^2 .

It is a cyclic number.

It is not a de Polignac number, because 212442320009 - 2⁴ = 212442319993 is a prime.

It is not a weakly prime, because it can be changed into another prime (212442320059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106221160004 + 106221160005.

It is an arithmetic number, because the mean of its divisors is an integer number (106221160005).

Almost surely, 2^212442320009 is an apocalyptic number.

It is an amenable number.

212442320009 is a deficient number, since it is larger than the sum of its proper divisors (1).

212442320009 is an equidigital number, since it uses as much as digits as its factorization.

212442320009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 212442320009 in words is "two hundred twelve billion, four hundred forty-two million, three hundred twenty thousand, nine".