12011111021212 has 12 divisors (see below), whose sum is σ = 21508268573176. Its totient is φ = 5865891428880.

The previous prime is 12011111021179. The next prime is 12011111021237. The reversal of 12011111021212 is 21212011111021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34916020239 + ... + 34916020582.

Almost surely, 2^{12011111021212} is an apocalyptic number.

It is an amenable number.

12011111021212 is a deficient number, since it is larger than the sum of its proper divisors (9497157551964).

12011111021212 is a wasteful number, since it uses less digits than its factorization.

12011111021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69832040868 (or 69832040866 counting only the distinct ones).

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

Adding to 12011111021212 its reverse (21212011111021), we get a palindrome (33223122132233).

It can be divided in two parts, 12011111021 and 212, that multiplied together give a palindrome (2546355536452).

The spelling of 12011111021212 in words is "twelve trillion, eleven billion, one hundred eleven million, twenty-one thousand, two hundred twelve".