12111200212 has 6 divisors (see below), whose sum is σ = 21194600378. Its totient is φ = 6055600104.

The previous prime is 12111200201. The next prime is 12111200237. The reversal of 12111200212 is 21200211121.

It can be written as a sum of positive squares in only one way, i.e., 6592790416 + 5518409796 = 81196^2 + 74286^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12111200192 and 12111200201.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1513900023 + ... + 1513900030.

Almost surely, 2^12111200212 is an apocalyptic number.

It is an amenable number.

12111200212 is a deficient number, since it is larger than the sum of its proper divisors (9083400166).

12111200212 is a wasteful number, since it uses less digits than its factorization.

12111200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027800057 (or 3027800055 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12111200212 its reverse (21200211121), we get a palindrome (33311411333).

The spelling of 12111200212 in words is "twelve billion, one hundred eleven million, two hundred thousand, two hundred twelve".