212212021210009 has 16 divisors (see below), whose sum is σ = 229481291621376. Its totient is φ = 195474754316800.

The previous prime is 212212021210003. The next prime is 212212021210039. The reversal of 212212021210009 is 900012120212212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212212021210009 - 2³ = 212212021210001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212212021210001) 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 in 15 ways as a sum of consecutive naturals, for example, 30641664 + ... + 36923374.

It is an arithmetic number, because the mean of its divisors is an integer number (14342580726336).

Almost surely, 2^{212212021210009} is an apocalyptic number.

It is an amenable number.

212212021210009 is a deficient number, since it is larger than the sum of its proper divisors (17269270411367).

212212021210009 is a wasteful number, since it uses less digits than its factorization.

212212021210009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6324056.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 212212021210009 in words is "two hundred twelve trillion, two hundred twelve billion, twenty-one million, two hundred ten thousand, nine".