8281063243121 has 4 divisors (see below), whose sum is σ = 8281179128832. Its totient is φ = 8280947357412.

The previous prime is 8281063243099. The next prime is 8281063243147. The reversal of 8281063243121 is 1213423601828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8281063243121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8281063245121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57835601 + ... + 57978606.

It is an arithmetic number, because the mean of its divisors is an integer number (2070294782208).

Almost surely, 2^{8281063243121} is an apocalyptic number.

It is an amenable number.

8281063243121 is a deficient number, since it is larger than the sum of its proper divisors (115885711).

8281063243121 is a wasteful number, since it uses less digits than its factorization.

8281063243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115885710.

The product of its (nonzero) digits is 110592, while the sum is 41.

Adding to 8281063243121 its reverse (1213423601828), we get a palindrome (9494486844949).

The spelling of 8281063243121 in words is "eight trillion, two hundred eighty-one billion, sixty-three million, two hundred forty-three thousand, one hundred twenty-one".