12421051255 has 8 divisors (see below), whose sum is σ = 14912913024. Its totient is φ = 9931740000.

The previous prime is 12421051213. The next prime is 12421051267. The reversal of 12421051255 is 55215012421.

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

It is a de Polignac number, because none of the positive numbers 2^k-12421051255 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 626896 + ... + 646405.

It is an arithmetic number, because the mean of its divisors is an integer number (1864114128).

Almost surely, 2^12421051255 is an apocalyptic number.

12421051255 is a deficient number, since it is larger than the sum of its proper divisors (2491861769).

12421051255 is a wasteful number, since it uses less digits than its factorization.

12421051255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275257.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 12421051255 its reverse (55215012421), we get a palindrome (67636063676).

The spelling of 12421051255 in words is "twelve billion, four hundred twenty-one million, fifty-one thousand, two hundred fifty-five".