20122110112 has 96 divisors (see below), whose sum is σ = 45792289872. Its totient is φ = 8620867584.

The previous prime is 20122110097. The next prime is 20122110121. The reversal of 20122110112 is 21101122102.

It can be written as a sum of positive squares in 8 ways, for example, as 4705411216 + 15416698896 = 68596^2 + 124164^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20122110092 and 20122110101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496768 + ... + 535744.

Almost surely, 2^20122110112 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 20122110112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22896144936).

20122110112 is an abundant number, since it is smaller than the sum of its proper divisors (25670179760).

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

20122110112 is a wasteful number, since it uses less digits than its factorization.

20122110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39090 (or 39082 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20122110112 its reverse (21101122102), we get a palindrome (41223232214).

The spelling of 20122110112 in words is "twenty billion, one hundred twenty-two million, one hundred ten thousand, one hundred twelve".