20021011112112 has 80 divisors (see below), whose sum is σ = 53049469997568. Its totient is φ = 6502985153280.

The previous prime is 20021011112111. The next prime is 20021011112143. The reversal of 20021011112112 is 21121111012002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20021011112091 and 20021011112100.

It is not an unprimeable number, because it can be changed into a prime (20021011112111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10651368 + ... + 12389255.

Almost surely, 2^{20021011112112} is an apocalyptic number.

It is an amenable number.

20021011112112 is an abundant number, since it is smaller than the sum of its proper divisors (33028458885456).

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

20021011112112 is a wasteful number, since it uses less digits than its factorization.

20021011112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23041098 (or 23041092 counting only the distinct ones).

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

Adding to 20021011112112 its reverse (21121111012002), we get a palindrome (41142122124114).

The spelling of 20021011112112 in words is "twenty trillion, twenty-one billion, eleven million, one hundred twelve thousand, one hundred twelve".