13124140404421 has 2 divisors, whose sum is σ = 13124140404422. Its totient is φ = 13124140404420.

The previous prime is 13124140404383. The next prime is 13124140404443. The reversal of 13124140404421 is 12440404142131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12858929824225 + 265210580196 = 3585935^2 + 514986^2 .

It is a cyclic number.

It is not a de Polignac number, because 13124140404421 - 2¹⁹ = 13124139880133 is a prime.

It is a super-2 number, since 2×13124140404421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13124140404461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562070202210 + 6562070202211.

It is an arithmetic number, because the mean of its divisors is an integer number (6562070202211).

Almost surely, 2^{13124140404421} is an apocalyptic number.

It is an amenable number.

13124140404421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13124140404421 is an equidigital number, since it uses as much as digits as its factorization.

13124140404421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 13124140404421 its reverse (12440404142131), we get a palindrome (25564544546552).

The spelling of 13124140404421 in words is "thirteen trillion, one hundred twenty-four billion, one hundred forty million, four hundred four thousand, four hundred twenty-one".