12051212340 has 24 divisors (see below), whose sum is σ = 33743394720. Its totient is φ = 3213656608.

The previous prime is 12051212323. The next prime is 12051212377. The reversal of 12051212340 is 4321215021.

12051212340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 100426710 + ... + 100426829.

It is an arithmetic number, because the mean of its divisors is an integer number (1405974780).

Almost surely, 2^12051212340 is an apocalyptic number.

12051212340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12051212340 is an abundant number, since it is smaller than the sum of its proper divisors (21692182380).

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

12051212340 is a wasteful number, since it uses less digits than its factorization.

12051212340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200853551 (or 200853549 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 12051212340 its reverse (4321215021), we get a palindrome (16372427361).

The spelling of 12051212340 in words is "twelve billion, fifty-one million, two hundred twelve thousand, three hundred forty".