12231031212 has 48 divisors (see below), whose sum is σ = 31752967680. Its totient is φ = 4071496464.

The previous prime is 12231031199. The next prime is 12231031217. The reversal of 12231031212 is 21213013221.

12231031212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12231031217) 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 15 ways as a sum of consecutive naturals, for example, 4033 + ... + 156455.

It is an arithmetic number, because the mean of its divisors is an integer number (661520160).

Almost surely, 2^12231031212 is an apocalyptic number.

12231031212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12231031212 is an abundant number, since it is smaller than the sum of its proper divisors (19521936468).

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

12231031212 is a wasteful number, since it uses less digits than its factorization.

12231031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153179 (or 153171 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12231031212 its reverse (21213013221), we get a palindrome (33444044433).

The spelling of 12231031212 in words is "twelve billion, two hundred thirty-one million, thirty-one thousand, two hundred twelve".