20021110112112 has 320 divisors, whose sum is σ = 56601625264128. Its totient is φ = 6073307136000.

The previous prime is 20021110111999. The next prime is 20021110112117. The reversal of 20021110112112 is 21121101112002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20021110112091 and 20021110112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021110112117) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1770050937 + ... + 1770062247.

Almost surely, 2^{20021110112112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20021110112112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28300812632064).

20021110112112 is an abundant number, since it is smaller than the sum of its proper divisors (36580515152016).

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

20021110112112 is a wasteful number, since it uses less digits than its factorization.

20021110112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11848 (or 11842 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20021110112112 its reverse (21121101112002), we get a palindrome (41142211224114).

The spelling of 20021110112112 in words is "twenty trillion, twenty-one billion, one hundred ten million, one hundred twelve thousand, one hundred twelve".