12021144321342 has 32 divisors (see below), whose sum is σ = 27017421355008. Its totient is φ = 3537995652576.

The previous prime is 12021144321341. The next prime is 12021144321349. The reversal of 12021144321342 is 24312344112021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021144321341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3350372878 + ... + 3350376465.

It is an arithmetic number, because the mean of its divisors is an integer number (844294417344).

Almost surely, 2^{12021144321342} is an apocalyptic number.

12021144321342 is an abundant number, since it is smaller than the sum of its proper divisors (14996277033666).

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

12021144321342 is a wasteful number, since it uses less digits than its factorization.

12021144321342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700749384.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 12021144321342 its reverse (24312344112021), we get a palindrome (36333488433363).

The spelling of 12021144321342 in words is "twelve trillion, twenty-one billion, one hundred forty-four million, three hundred twenty-one thousand, three hundred forty-two".