12100001220012 has 12 divisors (see below), whose sum is σ = 28233336180056. Its totient is φ = 4033333740000.

The previous prime is 12100001220001. The next prime is 12100001220017. The reversal of 12100001220012 is 21002210000121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1008333435001 = 12100001220012 / (1 + 2 + 1 + 0 + 0 + 0 + 0 + 1 + 2 + 2 + 0 + 0 + 1 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 12100001220012.

It is not an unprimeable number, because it can be changed into a prime (12100001220017) 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, 504166717489 + ... + 504166717512.

Almost surely, 2^{12100001220012} is an apocalyptic number.

12100001220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12100001220012 is an abundant number, since it is smaller than the sum of its proper divisors (16133334960044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12100001220012 is a wasteful number, since it uses less digits than its factorization.

12100001220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008333435008 (or 1008333435006 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12100001220012 its reverse (21002210000121), we get a palindrome (33102211220133).

The spelling of 12100001220012 in words is "twelve trillion, one hundred billion, one million, two hundred twenty thousand, twelve".