8445282122421 has 24 divisors (see below), whose sum is σ = 12960787151520. Its totient is φ = 5284013200416.

The previous prime is 8445282122393. The next prime is 8445282122437. The reversal of 8445282122421 is 1242212825448.

8445282122421 is a `hidden beast` number, since 8 + 4 + 4 + 5 + 2 + 8 + 212 + 2 + 421 = 666.

It is not a de Polignac number, because 8445282122421 - 2⁹ = 8445282121909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8445282122461) 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 23 ways as a sum of consecutive naturals, for example, 230764950 + ... + 230801543.

It is an arithmetic number, because the mean of its divisors is an integer number (540032797980).

Almost surely, 2^{8445282122421} is an apocalyptic number.

It is an amenable number.

8445282122421 is a deficient number, since it is larger than the sum of its proper divisors (4515505029099).

8445282122421 is a wasteful number, since it uses less digits than its factorization.

8445282122421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461566625 (or 461566622 counting only the distinct ones).

The product of its digits is 655360, while the sum is 45.

Adding to 8445282122421 its reverse (1242212825448), we get a palindrome (9687494947869).

The spelling of 8445282122421 in words is "eight trillion, four hundred forty-five billion, two hundred eighty-two million, one hundred twenty-two thousand, four hundred twenty-one".