12012211122112 has 56 divisors (see below), whose sum is σ = 23933292087600. Its totient is φ = 5981801404416.

The previous prime is 12012211122031. The next prime is 12012211122137. The reversal of 12012211122112 is 21122111221021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12012211122112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29406564 + ... + 29812252.

It is an arithmetic number, because the mean of its divisors is an integer number (427380215850).

Almost surely, 2^{12012211122112} is an apocalyptic number.

It is an amenable number.

12012211122112 is a deficient number, since it is larger than the sum of its proper divisors (11921080965488).

12012211122112 is a wasteful number, since it uses less digits than its factorization.

12012211122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407573 (or 407563 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12012211122112 its reverse (21122111221021), we get a palindrome (33134322343133).

The spelling of 12012211122112 in words is "twelve trillion, twelve billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twelve".