20021112002112 has 112 divisors (see below), whose sum is σ = 57065069138112. Its totient is φ = 6158427125760.

The previous prime is 20021112002093. The next prime is 20021112002113. The reversal of 20021112002112 is 21120021112002.

It is a super-2 number, since 2×20021112002112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021112002091 and 20021112002100.

It is not an unprimeable number, because it can be changed into a prime (20021112002113) 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, 6794463 + ... + 9284769.

It is an arithmetic number, because the mean of its divisors is an integer number (509509545876).

Almost surely, 2^{20021112002112} 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 20021112002112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28532534569056).

20021112002112 is an abundant number, since it is smaller than the sum of its proper divisors (37043957136000).

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

20021112002112 is a wasteful number, since it uses less digits than its factorization.

20021112002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493556 (or 2493546 counting only the distinct ones).

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

Adding to 20021112002112 its reverse (21120021112002), we get a palindrome (41141133114114).

The spelling of 20021112002112 in words is "twenty trillion, twenty-one billion, one hundred twelve million, two thousand, one hundred twelve".