12434530533421 has 2 divisors, whose sum is σ = 12434530533422. Its totient is φ = 12434530533420.

The previous prime is 12434530533413. The next prime is 12434530533437. The reversal of 12434530533421 is 12433503543421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12426682522500 + 7848010921 = 3525150^2 + 88589^2 .

It is an emirp because it is prime and its reverse (12433503543421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12434530533421 - 2³ = 12434530533413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12434530533461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6217265266710 + 6217265266711.

It is an arithmetic number, because the mean of its divisors is an integer number (6217265266711).

Almost surely, 2^{12434530533421} is an apocalyptic number.

It is an amenable number.

12434530533421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12434530533421 is an equidigital number, since it uses as much as digits as its factorization.

12434530533421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 12434530533421 in words is "twelve trillion, four hundred thirty-four billion, five hundred thirty million, five hundred thirty-three thousand, four hundred twenty-one".