212100022120012 has 24 divisors (see below), whose sum is σ = 420765226070000. Its totient is φ = 92740090643136.

The previous prime is 212100022120009. The next prime is 212100022120013. The reversal of 212100022120012 is 210021220001212.

It is a happy number.

212100022120012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212100022120013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107338066887 + ... + 107338068862.

Almost surely, 2^{212100022120012} is an apocalyptic number.

It is an amenable number.

212100022120012 is a deficient number, since it is larger than the sum of its proper divisors (208665203949988).

212100022120012 is a wasteful number, since it uses less digits than its factorization.

212100022120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214676135785 (or 214676135783 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212100022120012 its reverse (210021220001212), we get a palindrome (422121242121224).

The spelling of 212100022120012 in words is "two hundred twelve trillion, one hundred billion, twenty-two million, one hundred twenty thousand, twelve".