20000111220012 has 288 divisors, whose sum is σ = 62663761585152. Its totient is φ = 4847774976000.

The previous prime is 20000111219999. The next prime is 20000111220091. The reversal of 20000111220012 is 21002211100002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20000111220012.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8541312 + ... + 10627992.

It is an arithmetic number, because the mean of its divisors is an integer number (217582505504).

Almost surely, 2^{20000111220012} is an apocalyptic number.

20000111220012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000111220012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31331880792576).

20000111220012 is an abundant number, since it is smaller than the sum of its proper divisors (42663650365140).

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

20000111220012 is a wasteful number, since it uses less digits than its factorization.

20000111220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086781 (or 2086768 counting only the distinct ones).

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

Adding to 20000111220012 its reverse (21002211100002), we get a palindrome (41002322320014).

The spelling of 20000111220012 in words is "twenty trillion, one hundred eleven million, two hundred twenty thousand, twelve".