12082866421 has 2 divisors, whose sum is σ = 12082866422. Its totient is φ = 12082866420.

The previous prime is 12082866343. The next prime is 12082866431. The reversal of 12082866421 is 12466828021.

It is a happy number.

12082866421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11982586225 + 100280196 = 109465^2 + 10014^2 .

It is a cyclic number.

It is not a de Polignac number, because 12082866421 - 2²⁹ = 11545995509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12082866431) 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 as a sum of consecutive naturals, namely, 6041433210 + 6041433211.

It is an arithmetic number, because the mean of its divisors is an integer number (6041433211).

Almost surely, 2^12082866421 is an apocalyptic number.

It is an amenable number.

12082866421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12082866421 is an equidigital number, since it uses as much as digits as its factorization.

12082866421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 12082866421 in words is "twelve billion, eighty-two million, eight hundred sixty-six thousand, four hundred twenty-one".