12122212220112 has 20 divisors (see below), whose sum is σ = 31315714902080. Its totient is φ = 4040737406688.

The previous prime is 12122212220087. The next prime is 12122212220113. The reversal of 12122212220112 is 21102221222121.

It is a super-3 number, since 3×12122212220112³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122212220113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126273043912 + ... + 126273044007.

It is an arithmetic number, because the mean of its divisors is an integer number (1565785745104).

Almost surely, 2^{12122212220112} is an apocalyptic number.

12122212220112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12122212220112 is an abundant number, since it is smaller than the sum of its proper divisors (19193502681968).

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

12122212220112 is a wasteful number, since it uses less digits than its factorization.

12122212220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252546087930 (or 252546087924 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12122212220112 its reverse (21102221222121), we get a palindrome (33224433442233).

The spelling of 12122212220112 in words is "twelve trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty thousand, one hundred twelve".