12422421587 has 4 divisors (see below), whose sum is σ = 12823144896. Its totient is φ = 12021698280.

The previous prime is 12422421581. The next prime is 12422421623. The reversal of 12422421587 is 78512422421.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12422421587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12422421587.

It is not an unprimeable number, because it can be changed into a prime (12422421581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200361608 + ... + 200361669.

It is an arithmetic number, because the mean of its divisors is an integer number (3205786224).

Almost surely, 2^12422421587 is an apocalyptic number.

12422421587 is a deficient number, since it is larger than the sum of its proper divisors (400723309).

12422421587 is an equidigital number, since it uses as much as digits as its factorization.

12422421587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400723308.

The product of its digits is 71680, while the sum is 38.

The spelling of 12422421587 in words is "twelve billion, four hundred twenty-two million, four hundred twenty-one thousand, five hundred eighty-seven".