212221120220012 has 24 divisors (see below), whose sum is σ = 373480593722880. Its totient is φ = 105513664188240.

The previous prime is 212221120219993. The next prime is 212221120220017. The reversal of 212221120220012 is 210022021122212.

It is not an unprimeable number, because it can be changed into a prime (212221120220017) 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, 159967928 + ... + 161289119.

It is an arithmetic number, because the mean of its divisors is an integer number (15561691405120).

Almost surely, 2^{212221120220012} is an apocalyptic number.

It is an amenable number.

212221120220012 is a deficient number, since it is larger than the sum of its proper divisors (161259473502868).

212221120220012 is a wasteful number, since it uses less digits than its factorization.

212221120220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321257981 (or 321257979 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212221120220012 its reverse (210022021122212), we get a palindrome (422243141342224).

The spelling of 212221120220012 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred twenty million, two hundred twenty thousand, twelve".