12000001212112 has 20 divisors (see below), whose sum is σ = 23265012081700. Its totient is φ = 5996127126528.

The previous prime is 12000001212053. The next prime is 12000001212119. The reversal of 12000001212112 is 21121210000021.

It can be written as a sum of positive squares in 2 ways, for example, as 4637114332816 + 7362886879296 = 2153396^2 + 2713464^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12000001212092 and 12000001212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000001212119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242066913 + ... + 242116480.

It is an arithmetic number, because the mean of its divisors is an integer number (1163250604085).

Almost surely, 2^{12000001212112} is an apocalyptic number.

It is an amenable number.

12000001212112 is a deficient number, since it is larger than the sum of its proper divisors (11265010869588).

12000001212112 is a wasteful number, since it uses less digits than its factorization.

12000001212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484184950 (or 484184944 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12000001212112 its reverse (21121210000021), we get a palindrome (33121211212133).

The spelling of 12000001212112 in words is "twelve trillion, one million, two hundred twelve thousand, one hundred twelve".