212000112102005 has 16 divisors (see below), whose sum is σ = 257886093218544. Its totient is φ = 167276135692800.

The previous prime is 212000112102001. The next prime is 212000112102067. The reversal of 212000112102005 is 500201211000212.

It can be written as a sum of positive squares in 8 ways, for example, as 7855654206436 + 204144457895569 = 2802794^2 + 14287913^2 .

It is not a de Polignac number, because 212000112102005 - 2² = 212000112102001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000112102001) 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, 103830455 + ... + 105852555.

It is an arithmetic number, because the mean of its divisors is an integer number (16117880826159).

Almost surely, 2^{212000112102005} is an apocalyptic number.

It is an amenable number.

212000112102005 is a deficient number, since it is larger than the sum of its proper divisors (45885981116539).

212000112102005 is a wasteful number, since it uses less digits than its factorization.

212000112102005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309416.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 212000112102005 its reverse (500201211000212), we get a palindrome (712201323102217).

The spelling of 212000112102005 in words is "two hundred twelve trillion, one hundred twelve million, one hundred two thousand, five".