12555222105 has 8 divisors (see below), whose sum is σ = 20088355392. Its totient is φ = 6696118448.

The previous prime is 12555222073. The next prime is 12555222131. The reversal of 12555222105 is 50122255521.

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 12555222105 - 2⁵ = 12555222073 is a prime.

It is an unprimeable number.

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, 418507389 + ... + 418507418.

It is an arithmetic number, because the mean of its divisors is an integer number (2511044424).

Almost surely, 2^12555222105 is an apocalyptic number.

12555222105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12555222105 is a deficient number, since it is larger than the sum of its proper divisors (7533133287).

12555222105 is an equidigital number, since it uses as much as digits as its factorization.

12555222105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837014815.

The product of its (nonzero) digits is 10000, while the sum is 30.

Adding to 12555222105 its reverse (50122255521), we get a palindrome (62677477626).

The spelling of 12555222105 in words is "twelve billion, five hundred fifty-five million, two hundred twenty-two thousand, one hundred five".