12420710281 has 4 divisors (see below), whose sum is σ = 14195097472. Its totient is φ = 10646323092.

The previous prime is 12420710279. The next prime is 12420710293. The reversal of 12420710281 is 18201702421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12420710281 - 2¹ = 12420710279 is a prime.

It is a super-2 number, since 2×12420710281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12420710231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 887193585 + ... + 887193598.

It is an arithmetic number, because the mean of its divisors is an integer number (3548774368).

Almost surely, 2^12420710281 is an apocalyptic number.

It is an amenable number.

12420710281 is a deficient number, since it is larger than the sum of its proper divisors (1774387191).

12420710281 is an equidigital number, since it uses as much as digits as its factorization.

12420710281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774387190.

The product of its (nonzero) digits is 1792, while the sum is 28.

The spelling of 12420710281 in words is "twelve billion, four hundred twenty million, seven hundred ten thousand, two hundred eighty-one".