12111111020012 has 24 divisors (see below), whose sum is σ = 21361279457280. Its totient is φ = 6007946919120.

The previous prime is 12111111020011. The next prime is 12111111020017. The reversal of 12111111020012 is 21002011111121.

It is a super-2 number, since 2×12111111020012² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12111111020011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6497564 + ... + 8151107.

It is an arithmetic number, because the mean of its divisors is an integer number (890053310720).

Almost surely, 2^{12111111020012} is an apocalyptic number.

It is an amenable number.

12111111020012 is a deficient number, since it is larger than the sum of its proper divisors (9250168437268).

12111111020012 is a wasteful number, since it uses less digits than its factorization.

12111111020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14650301 (or 14650299 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12111111020012 its reverse (21002011111121), we get a palindrome (33113122131133).

The spelling of 12111111020012 in words is "twelve trillion, one hundred eleven billion, one hundred eleven million, twenty thousand, twelve".