12251788331 has 4 divisors (see below), whose sum is σ = 12257712000. Its totient is φ = 12245864664.

The previous prime is 12251788319. The next prime is 12251788337. The reversal of 12251788331 is 13388715221.

12251788331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13388715221 = 7 ⋅1912673603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12251788331 is a prime.

It is a super-2 number, since 2×12251788331² (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 (12251788337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2958731 + ... + 2962868.

It is an arithmetic number, because the mean of its divisors is an integer number (3064428000).

Almost surely, 2^12251788331 is an apocalyptic number.

12251788331 is a deficient number, since it is larger than the sum of its proper divisors (5923669).

12251788331 is an equidigital number, since it uses as much as digits as its factorization.

12251788331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5923668.

The product of its digits is 80640, while the sum is 41.

The spelling of 12251788331 in words is "twelve billion, two hundred fifty-one million, seven hundred eighty-eight thousand, three hundred thirty-one".