12001220100012 has 48 divisors (see below), whose sum is σ = 32898449509632. Its totient is φ = 3356984642880.

The previous prime is 12001220100011. The next prime is 12001220100031. The reversal of 12001220100012 is 21000102210021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12001220100011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3496857288 + ... + 3496860719.

It is an arithmetic number, because the mean of its divisors is an integer number (685384364784).

Almost surely, 2^{12001220100012} is an apocalyptic number.

12001220100012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001220100012 is an abundant number, since it is smaller than the sum of its proper divisors (20897229409620).

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

12001220100012 is a wasteful number, since it uses less digits than its factorization.

12001220100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993718038 (or 6993718036 counting only the distinct ones).

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

Adding to 12001220100012 its reverse (21000102210021), we get a palindrome (33001322310033).

The spelling of 12001220100012 in words is "twelve trillion, one billion, two hundred twenty million, one hundred thousand, twelve".