20111100000222 has 256 divisors, whose sum is σ = 53368253153280. Its totient is φ = 4891302451200.

The previous prime is 20111100000221. The next prime is 20111100000247. The reversal of 20111100000222 is 22200000111102.

It is a junction number, because it is equal to n+sod(n) for n = 20111100000198 and 20111100000207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111100000221) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3335724304 + ... + 3335730332.

It is an arithmetic number, because the mean of its divisors is an integer number (208469738880).

Almost surely, 2^{20111100000222} is an apocalyptic number.

20111100000222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111100000222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26684126576640).

20111100000222 is an abundant number, since it is smaller than the sum of its proper divisors (33257153153058).

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

20111100000222 is a wasteful number, since it uses less digits than its factorization.

20111100000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8167.

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

Adding to 20111100000222 its reverse (22200000111102), we get a palindrome (42311100111324).

The spelling of 20111100000222 in words is "twenty trillion, one hundred eleven billion, one hundred million, two hundred twenty-two", and thus it is an aban number.