20111200000012 has 24 divisors (see below), whose sum is σ = 38397802060800. Its totient is φ = 9140575266960.

The previous prime is 20111199999971. The next prime is 20111200000061. The reversal of 20111200000012 is 21000000211102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21519208 + ... + 22434319.

It is an arithmetic number, because the mean of its divisors is an integer number (1599908419200).

Almost surely, 2^{20111200000012} is an apocalyptic number.

20111200000012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20111200000012 is a deficient number, since it is larger than the sum of its proper divisors (18286602060788).

20111200000012 is a wasteful number, since it uses less digits than its factorization.

20111200000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43963941 (or 43963939 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20111200000012 its reverse (21000000211102), we get a palindrome (41111200211114).

The spelling of 20111200000012 in words is "twenty trillion, one hundred eleven billion, two hundred million, twelve", and thus it is an aban number.