22120001112 has 128 divisors (see below), whose sum is σ = 64509696000. Its totient is φ = 6246144000.

The previous prime is 22120001093. The next prime is 22120001119. The reversal of 22120001112 is 21110002122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120001119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428889 + ... + 477687.

It is an arithmetic number, because the mean of its divisors is an integer number (503982000).

Almost surely, 2^22120001112 is an apocalyptic number.

22120001112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22120001112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32254848000).

22120001112 is an abundant number, since it is smaller than the sum of its proper divisors (42389694888).

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

22120001112 is a wasteful number, since it uses less digits than its factorization.

22120001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48937 (or 48933 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22120001112 its reverse (21110002122), we get a palindrome (43230003234).

The spelling of 22120001112 in words is "twenty-two billion, one hundred twenty million, one thousand, one hundred twelve".