12201122112 has 56 divisors (see below), whose sum is σ = 32346570816. Its totient is φ = 4058923008.

The previous prime is 12201122081. The next prime is 12201122113. The reversal of 12201122112 is 21122110221.

12201122112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12201122091 and 12201122100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201122113) 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 7 ways as a sum of consecutive naturals, for example, 33408 + ... + 159744.

It is an arithmetic number, because the mean of its divisors is an integer number (577617336).

Almost surely, 2^12201122112 is an apocalyptic number.

12201122112 is a gapful number since it is divisible by the number (12) 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 12201122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16173285408).

12201122112 is an abundant number, since it is smaller than the sum of its proper divisors (20145448704).

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

12201122112 is a wasteful number, since it uses less digits than its factorization.

12201122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126855 (or 126845 counting only the distinct ones).

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

Adding to 12201122112 its reverse (21122110221), we get a palindrome (33323232333).

The spelling of 12201122112 in words is "twelve billion, two hundred one million, one hundred twenty-two thousand, one hundred twelve".