20001100111012 has 12 divisors (see below), whose sum is σ = 35081656234240. Its totient is φ = 9977769758376.

The previous prime is 20001100111009. The next prime is 20001100111019. The reversal of 20001100111012 is 21011100110002.

It is a self number, because there is not a number n which added to its sum of digits gives 20001100111012.

It is not an unprimeable number, because it can be changed into a prime (20001100111019) 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 3 ways as a sum of consecutive naturals, for example, 5695072308 + ... + 5695075819.

Almost surely, 2^{20001100111012} is an apocalyptic number.

It is an amenable number.

20001100111012 is a deficient number, since it is larger than the sum of its proper divisors (15080556123228).

20001100111012 is a wasteful number, since it uses less digits than its factorization.

20001100111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11390148570 (or 11390148568 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20001100111012 its reverse (21011100110002), we get a palindrome (41012200221014).

The spelling of 20001100111012 in words is "twenty trillion, one billion, one hundred million, one hundred eleven thousand, twelve".