20021111200012 has 48 divisors (see below), whose sum is σ = 39046138941600. Its totient is φ = 8918917217280.

The previous prime is 20021111199961. The next prime is 20021111200031. The reversal of 20021111200012 is 21000211112002.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20021111199965 and 20021111200001.

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 15 ways as a sum of consecutive naturals, for example, 2353812 + ... + 6751492.

It is an arithmetic number, because the mean of its divisors is an integer number (813461227950).

Almost surely, 2^{20021111200012} is an apocalyptic number.

It is an amenable number.

20021111200012 is a deficient number, since it is larger than the sum of its proper divisors (19025027741588).

20021111200012 is a wasteful number, since it uses less digits than its factorization.

20021111200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400746 (or 4400744 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20021111200012 its reverse (21000211112002), we get a palindrome (41021322312014).

The spelling of 20021111200012 in words is "twenty trillion, twenty-one billion, one hundred eleven million, two hundred thousand, twelve".