20011322112 has 144 divisors (see below), whose sum is σ = 54872471808. Its totient is φ = 6470553600.

The previous prime is 20011322053. The next prime is 20011322113. The reversal of 20011322112 is 21122311002.

It is a junction number, because it is equal to n+sod(n) for n = 20011322091 and 20011322100.

It is not an unprimeable number, because it can be changed into a prime (20011322113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4984618 + ... + 4988630.

It is an arithmetic number, because the mean of its divisors is an integer number (381058832).

Almost surely, 2^20011322112 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 20011322112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27436235904).

20011322112 is an abundant number, since it is smaller than the sum of its proper divisors (34861149696).

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

20011322112 is a wasteful number, since it uses less digits than its factorization.

20011322112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226 (or 4212 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20011322112 its reverse (21122311002), we get a palindrome (41133633114).

The spelling of 20011322112 in words is "twenty billion, eleven million, three hundred twenty-two thousand, one hundred twelve".