12421248265 has 4 divisors (see below), whose sum is σ = 14905497924. Its totient is φ = 9936998608.

The previous prime is 12421248253. The next prime is 12421248283. The reversal of 12421248265 is 56284212421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5624400016 + 6796848249 = 74996^2 + 82443^2 .

It is a cyclic number.

It is not a de Polignac number, because 12421248265 - 2²¹ = 12419151113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242124822 + ... + 1242124831.

It is an arithmetic number, because the mean of its divisors is an integer number (3726374481).

Almost surely, 2^12421248265 is an apocalyptic number.

It is an amenable number.

12421248265 is a deficient number, since it is larger than the sum of its proper divisors (2484249659).

12421248265 is an equidigital number, since it uses as much as digits as its factorization.

12421248265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484249658.

The product of its digits is 61440, while the sum is 37.

The spelling of 12421248265 in words is "twelve billion, four hundred twenty-one million, two hundred forty-eight thousand, two hundred sixty-five".