212212202100212 has 12 divisors (see below), whose sum is σ = 371411385146340. Its totient is φ = 106094663486976.

The previous prime is 212212202100211. The next prime is 212212202100257. The reversal of 212212202100212 is 212001202212212.

It can be written as a sum of positive squares in 2 ways, for example, as 110293768343056 + 101918433757156 = 10502084^2 + 10095466^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212202100211) 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, 2859349037 + ... + 2859423252.

It is an arithmetic number, because the mean of its divisors is an integer number (30950948762195).

Almost surely, 2^{212212202100212} is an apocalyptic number.

It is an amenable number.

212212202100212 is a deficient number, since it is larger than the sum of its proper divisors (159199183046128).

212212202100212 is a wasteful number, since it uses less digits than its factorization.

212212202100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5718781570 (or 5718781568 counting only the distinct ones).

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

Adding to 212212202100212 its reverse (212001202212212), we get a palindrome (424213404312424).

The spelling of 212212202100212 in words is "two hundred twelve trillion, two hundred twelve billion, two hundred two million, one hundred thousand, two hundred twelve".