12321255 has 16 divisors (see below), whose sum is σ = 19762560. Its totient is φ = 6555168.

The previous prime is 12321247. The next prime is 12321289. The reversal of 12321255 is 55212321.

12321255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12321255 - 2³ = 12321247 is a prime.

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, 7716 + ... + 9174.

It is an arithmetic number, because the mean of its divisors is an integer number (1235160).

Almost surely, 2^12321255 is an apocalyptic number.

12321255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12321255 is a deficient number, since it is larger than the sum of its proper divisors (7441305).

12321255 is a wasteful number, since it uses less digits than its factorization.

12321255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030.

The product of its digits is 600, while the sum is 21.

The square root of 12321255 is about 3510.1645260586. The cubic root of 12321255 is about 230.9679121862.

Adding to 12321255 its reverse (55212321), we get a palindrome (67533576).

The spelling of 12321255 in words is "twelve million, three hundred twenty-one thousand, two hundred fifty-five".