12255142212321 has 24 divisors (see below), whose sum is σ = 17299865856384. Its totient is φ = 7715672915040.

The previous prime is 12255142212289. The next prime is 12255142212343. The reversal of 12255142212321 is 12321224155221.

It is a happy number.

It is not a de Polignac number, because 12255142212321 - 2⁵ = 12255142212289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12255142212361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17505145 + ... + 18191766.

It is an arithmetic number, because the mean of its divisors is an integer number (720827744016).

Almost surely, 2^{12255142212321} is an apocalyptic number.

It is an amenable number.

12255142212321 is a deficient number, since it is larger than the sum of its proper divisors (5044723644063).

12255142212321 is a wasteful number, since it uses less digits than its factorization.

12255142212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35697269 (or 35697250 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

Adding to 12255142212321 its reverse (12321224155221), we get a palindrome (24576366367542).

The spelling of 12255142212321 in words is "twelve trillion, two hundred fifty-five billion, one hundred forty-two million, two hundred twelve thousand, three hundred twenty-one".