12012100111012 has 24 divisors (see below), whose sum is σ = 21038908275000. Its totient is φ = 6000983878656.

The previous prime is 12012100111003. The next prime is 12012100111019. The reversal of 12012100111012 is 21011100121021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 387859910656 + 11624240200356 = 622784^2 + 3409434^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12012100110983 and 12012100111001.

It is not an unprimeable number, because it can be changed into a prime (12012100111019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177688914 + ... + 177756502.

It is an arithmetic number, because the mean of its divisors is an integer number (876621178125).

Almost surely, 2^{12012100111012} is an apocalyptic number.

It is an amenable number.

12012100111012 is a deficient number, since it is larger than the sum of its proper divisors (9026808163988).

12012100111012 is a wasteful number, since it uses less digits than its factorization.

12012100111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104415 (or 104413 counting only the distinct ones).

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

Adding to 12012100111012 its reverse (21011100121021), we get a palindrome (33023200232033).

The spelling of 12012100111012 in words is "twelve trillion, twelve billion, one hundred million, one hundred eleven thousand, twelve".