12111210100012 has 24 divisors (see below), whose sum is σ = 21206654945280. Its totient is φ = 6052166690640.

The previous prime is 12111210100001. The next prime is 12111210100021. The reversal of 12111210100012 is 21000101211121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12111210099965 and 12111210100001.

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 7 ways as a sum of consecutive naturals, for example, 58422039 + ... + 58628977.

It is an arithmetic number, because the mean of its divisors is an integer number (883610622720).

Almost surely, 2^{12111210100012} is an apocalyptic number.

It is an amenable number.

12111210100012 is a deficient number, since it is larger than the sum of its proper divisors (9095444845268).

12111210100012 is a wasteful number, since it uses less digits than its factorization.

12111210100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215181 (or 215179 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12111210100012 its reverse (21000101211121), we get a palindrome (33111311311133).

The spelling of 12111210100012 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, one hundred thousand, twelve".