20021220011112 has 16 divisors (see below), whose sum is σ = 50053050027840. Its totient is φ = 6673740003696.

The previous prime is 20021220011083. The next prime is 20021220011113. The reversal of 20021220011112 is 21111002212002.

It is a junction number, because it is equal to n+sod(n) for n = 20021220011091 and 20021220011100.

It is not an unprimeable number, because it can be changed into a prime (20021220011113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417108750208 + ... + 417108750255.

It is an arithmetic number, because the mean of its divisors is an integer number (3128315626740).

Almost surely, 2^{20021220011112} is an apocalyptic number.

It is an amenable number.

20021220011112 is an abundant number, since it is smaller than the sum of its proper divisors (30031830016728).

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

20021220011112 is a wasteful number, since it uses less digits than its factorization.

20021220011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834217500472 (or 834217500468 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021220011112 its reverse (21111002212002), we get a palindrome (41132222223114).

The spelling of 20021220011112 in words is "twenty trillion, twenty-one billion, two hundred twenty million, eleven thousand, one hundred twelve".