12842167221831 has 4 divisors (see below), whose sum is σ = 17122889629112. Its totient is φ = 8561444814552.

The previous prime is 12842167221809. The next prime is 12842167221841. The reversal of 12842167221831 is 13812276124821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12842167221831 - 2¹⁰ = 12842167220807 is a prime.

It is a super-2 number, since 2×12842167221831² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12842167221841) 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 3 ways as a sum of consecutive naturals, for example, 2140361203636 + ... + 2140361203641.

It is an arithmetic number, because the mean of its divisors is an integer number (4280722407278).

Almost surely, 2^{12842167221831} is an apocalyptic number.

12842167221831 is a deficient number, since it is larger than the sum of its proper divisors (4280722407281).

12842167221831 is an equidigital number, since it uses as much as digits as its factorization.

12842167221831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280722407280.

The product of its digits is 516096, while the sum is 48.

The spelling of 12842167221831 in words is "twelve trillion, eight hundred forty-two billion, one hundred sixty-seven million, two hundred twenty-one thousand, eight hundred thirty-one".