20121002200012 has 24 divisors (see below), whose sum is σ = 40417733689760. Its totient is φ = 8585630380800.

The previous prime is 20121002199997. The next prime is 20121002200021. The reversal of 20121002200012 is 21000220012102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20121002199965 and 20121002200001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1569004989 + ... + 1569017812.

Almost surely, 2^{20121002200012} is an apocalyptic number.

It is an amenable number.

20121002200012 is an abundant number, since it is smaller than the sum of its proper divisors (20296731489748).

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

20121002200012 is a wasteful number, since it uses less digits than its factorization.

20121002200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138023041 (or 3138023039 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20121002200012 its reverse (21000220012102), we get a palindrome (41121222212114).

The spelling of 20121002200012 in words is "twenty trillion, one hundred twenty-one billion, two million, two hundred thousand, twelve".