12003421687 has 2 divisors, whose sum is σ = 12003421688. Its totient is φ = 12003421686.

The previous prime is 12003421613. The next prime is 12003421691. The reversal of 12003421687 is 78612430021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12003421687 - 2¹⁹ = 12002897399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12003421187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001710843 + 6001710844.

It is an arithmetic number, because the mean of its divisors is an integer number (6001710844).

Almost surely, 2^12003421687 is an apocalyptic number.

12003421687 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003421687 is an equidigital number, since it uses as much as digits as its factorization.

12003421687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 12003421687 in words is "twelve billion, three million, four hundred twenty-one thousand, six hundred eighty-seven".