12454122145421 has 12 divisors (see below), whose sum is σ = 13980502165056. Its totient is φ = 11081037106920.

The previous prime is 12454122145379. The next prime is 12454122145441.

12454122145421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12454122145421 - 2¹⁸ = 12454121883277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12454122145441) 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 in 11 ways as a sum of consecutive naturals, for example, 1094958455 + ... + 1094969828.

It is an arithmetic number, because the mean of its divisors is an integer number (1165041847088).

Almost surely, 2^{12454122145421} is an apocalyptic number.

12454122145421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12454122145421 is a deficient number, since it is larger than the sum of its proper divisors (1526380019635).

12454122145421 is a wasteful number, since it uses less digits than its factorization.

12454122145421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189928352 (or 2189928341 counting only the distinct ones).

The product of its digits is 102400, while the sum is 38.

The spelling of 12454122145421 in words is "twelve trillion, four hundred fifty-four billion, one hundred twenty-two million, one hundred forty-five thousand, four hundred twenty-one".