12721431119 has 2 divisors, whose sum is σ = 12721431120. Its totient is φ = 12721431118.

The previous prime is 12721431113. The next prime is 12721431127. The reversal of 12721431119 is 91113412721.

12721431119 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12721431119 - 2⁴ = 12721431103 is a prime.

It is a super-2 number, since 2×12721431119² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12721431113) 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, 6360715559 + 6360715560.

It is an arithmetic number, because the mean of its divisors is an integer number (6360715560).

Almost surely, 2^12721431119 is an apocalyptic number.

12721431119 is a deficient number, since it is larger than the sum of its proper divisors (1).

12721431119 is an equidigital number, since it uses as much as digits as its factorization.

12721431119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The spelling of 12721431119 in words is "twelve billion, seven hundred twenty-one million, four hundred thirty-one thousand, one hundred nineteen".