212102220221212 has 48 divisors (see below), whose sum is σ = 387074022249600. Its totient is φ = 101625610217472.

The previous prime is 212102220221167. The next prime is 212102220221219. The reversal of 212102220221212 is 212122022201212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102220221219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54524337 + ... + 58284712.

It is an arithmetic number, because the mean of its divisors is an integer number (8064042130200).

Almost surely, 2^{212102220221212} is an apocalyptic number.

It is an amenable number.

212102220221212 is a deficient number, since it is larger than the sum of its proper divisors (174971802028388).

212102220221212 is a wasteful number, since it uses less digits than its factorization.

212102220221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112809310 (or 112809308 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212102220221212 its reverse (212122022201212), we get a palindrome (424224242422424).

The spelling of 212102220221212 in words is "two hundred twelve trillion, one hundred two billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twelve".