12321136342 has 16 divisors (see below), whose sum is σ = 19667210400. Its totient is φ = 5769042048.

The previous prime is 12321136313. The next prime is 12321136343. The reversal of 12321136342 is 24363112321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12321136342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321136343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903753 + ... + 917284.

It is an arithmetic number, because the mean of its divisors is an integer number (1229200650).

Almost surely, 2^12321136342 is an apocalyptic number.

12321136342 is a deficient number, since it is larger than the sum of its proper divisors (7346074058).

12321136342 is a wasteful number, since it uses less digits than its factorization.

12321136342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821255.

The product of its digits is 5184, while the sum is 28.

Adding to 12321136342 its reverse (24363112321), we get a palindrome (36684248663).

The spelling of 12321136342 in words is "twelve billion, three hundred twenty-one million, one hundred thirty-six thousand, three hundred forty-two".