12132440340 has 48 divisors (see below), whose sum is σ = 34380134208. Its totient is φ = 3196336384.

The previous prime is 12132440321. The next prime is 12132440389. The reversal of 12132440340 is 4304423121.

It is a super-2 number, since 2×12132440340² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12132440340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1213137 + ... + 1223096.

It is an arithmetic number, because the mean of its divisors is an integer number (716252796).

Almost surely, 2^12132440340 is an apocalyptic number.

12132440340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12132440340 is an abundant number, since it is smaller than the sum of its proper divisors (22247693868).

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

12132440340 is a wasteful number, since it uses less digits than its factorization.

12132440340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436328 (or 2436326 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12132440340 its reverse (4304423121), we get a palindrome (16436863461).

The spelling of 12132440340 in words is "twelve billion, one hundred thirty-two million, four hundred forty thousand, three hundred forty".