12122031012 has 144 divisors (see below), whose sum is σ = 35964008640. Its totient is φ = 3149169408.

The previous prime is 12122030993. The next prime is 12122031017. The reversal of 12122031012 is 21013022121.

It is a junction number, because it is equal to n+sod(n) for n = 12122030982 and 12122031000.

It is not an unprimeable number, because it can be changed into a prime (12122031017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 500314 + ... + 523982.

It is an arithmetic number, because the mean of its divisors is an integer number (249750060).

Almost surely, 2^12122031012 is an apocalyptic number.

12122031012 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 12122031012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17982004320).

12122031012 is an abundant number, since it is smaller than the sum of its proper divisors (23841977628).

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

12122031012 is a wasteful number, since it uses less digits than its factorization.

12122031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23770 (or 23761 counting only the distinct ones).

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

Adding to 12122031012 its reverse (21013022121), we get a palindrome (33135053133).

The spelling of 12122031012 in words is "twelve billion, one hundred twenty-two million, thirty-one thousand, twelve".