12211022100212 has 24 divisors (see below), whose sum is σ = 23271654054600. Its totient is φ = 5572532123136.

The previous prime is 12211022100113. The next prime is 12211022100223. The reversal of 12211022100212 is 21200122011221.

It can be written as a sum of positive squares in 4 ways, for example, as 572921831056 + 11638100269156 = 756916^2 + 3411466^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319250137 + ... + 1319259392.

It is an arithmetic number, because the mean of its divisors is an integer number (969652252275).

Almost surely, 2^{12211022100212} is an apocalyptic number.

It is an amenable number.

12211022100212 is a deficient number, since it is larger than the sum of its proper divisors (11060631954388).

12211022100212 is a wasteful number, since it uses less digits than its factorization.

12211022100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638509635 (or 2638509633 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12211022100212 its reverse (21200122011221), we get a palindrome (33411144111433).

The spelling of 12211022100212 in words is "twelve trillion, two hundred eleven billion, twenty-two million, one hundred thousand, two hundred twelve".