12142112321 has 8 divisors (see below), whose sum is σ = 12979056384. Its totient is φ = 11330920480.

The previous prime is 12142112299. The next prime is 12142112371. The reversal of 12142112321 is 12321124121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12142112321 - 2²² = 12137918017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12142112293 and 12142112302.

It is not an unprimeable number, because it can be changed into a prime (12142112371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6437081 + ... + 6438966.

It is an arithmetic number, because the mean of its divisors is an integer number (1622382048).

Almost surely, 2^12142112321 is an apocalyptic number.

It is an amenable number.

12142112321 is a deficient number, since it is larger than the sum of its proper divisors (836944063).

12142112321 is a wasteful number, since it uses less digits than its factorization.

12142112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12876111.

The product of its digits is 192, while the sum is 20.

Adding to 12142112321 its reverse (12321124121), we get a palindrome (24463236442).

The spelling of 12142112321 in words is "twelve billion, one hundred forty-two million, one hundred twelve thousand, three hundred twenty-one".