20021112200000 has 168 divisors, whose sum is σ = 50287193913600. Its totient is φ = 7907065920000.

The previous prime is 20021112199999. The next prime is 20021112200051. The reversal of 20021112200000 is 221112002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15166421 + ... + 16433579.

It is an arithmetic number, because the mean of its divisors is an integer number (299328535200).

Almost surely, 2^{20021112200000} is an apocalyptic number.

20021112200000 is a gapful number since it is divisible by the number (20) 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 20021112200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25143596956800).

20021112200000 is an abundant number, since it is smaller than the sum of its proper divisors (30266081713600).

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

20021112200000 is an frugal number, since it uses more digits than its factorization.

20021112200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267275 (or 1267245 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20021112200000 its reverse (221112002), we get a palindrome (20021333312002).

The spelling of 20021112200000 in words is "twenty trillion, twenty-one billion, one hundred twelve million, two hundred thousand".