12011321213212 has 12 divisors (see below), whose sum is σ = 21019836997936. Its totient is φ = 6005653499520.

The previous prime is 12011321213201. The next prime is 12011321213233. The reversal of 12011321213212 is 21231212311021.

It is a happy number.

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 in 3 ways as a sum of consecutive naturals, for example, 4452268 + ... + 6621580.

Almost surely, 2^{12011321213212} is an apocalyptic number.

It is an amenable number.

12011321213212 is a deficient number, since it is larger than the sum of its proper divisors (9008515784724).

12011321213212 is a wasteful number, since it uses less digits than its factorization.

12011321213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3553548 (or 3553546 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 12011321213212 its reverse (21231212311021), we get a palindrome (33242533524233).

The spelling of 12011321213212 in words is "twelve trillion, eleven billion, three hundred twenty-one million, two hundred thirteen thousand, two hundred twelve".