212021200221212 has 12 divisors (see below), whose sum is σ = 375733772544480. Its totient is φ = 104668693779936.

The previous prime is 212021200221211. The next prime is 212021200221217. The reversal of 212021200221212 is 212122002120212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021200221211) 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 3 ways as a sum of consecutive naturals, for example, 335476582313 + ... + 335476582944.

It is an arithmetic number, because the mean of its divisors is an integer number (31311147712040).

Almost surely, 2^{212021200221212} is an apocalyptic number.

It is an amenable number.

212021200221212 is a deficient number, since it is larger than the sum of its proper divisors (163712572323268).

212021200221212 is a wasteful number, since it uses less digits than its factorization.

212021200221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670953165340 (or 670953165338 counting only the distinct ones).

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

Adding to 212021200221212 its reverse (212122002120212), we get a palindrome (424143202341424).

The spelling of 212021200221212 in words is "two hundred twelve trillion, twenty-one billion, two hundred million, two hundred twenty-one thousand, two hundred twelve".