12424360142221 has 8 divisors (see below), whose sum is σ = 12596357368184. Its totient is φ = 12252411578880.

The previous prime is 12424360142203. The next prime is 12424360142239. The reversal of 12424360142221 is 12224106342421.

It is an interprime number because it is at equal distance from previous prime (12424360142203) and next prime (12424360142239).

It can be written as a sum of positive squares in 4 ways, for example, as 1351671312996 + 11072688829225 = 1162614^2 + 3327565^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12424360142221 - 2⁵ = 12424360142189 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 (12424360142021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11651340 + ... + 12672901.

It is an arithmetic number, because the mean of its divisors is an integer number (1574544671023).

Almost surely, 2^{12424360142221} is an apocalyptic number.

It is an amenable number.

12424360142221 is a deficient number, since it is larger than the sum of its proper divisors (171997225963).

12424360142221 is an equidigital number, since it uses as much as digits as its factorization.

12424360142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24331311.

The product of its (nonzero) digits is 36864, while the sum is 34.

Adding to 12424360142221 its reverse (12224106342421), we get a palindrome (24648466484642).

The spelling of 12424360142221 in words is "twelve trillion, four hundred twenty-four billion, three hundred sixty million, one hundred forty-two thousand, two hundred twenty-one".