12413223231421 has 2 divisors, whose sum is σ = 12413223231422. Its totient is φ = 12413223231420.

The previous prime is 12413223231377. The next prime is 12413223231457. The reversal of 12413223231421 is 12413232231421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10562565000100 + 1850658231321 = 3250010^2 + 1360389^2 .

It is a cyclic number.

It is not a de Polignac number, because 12413223231421 - 2¹³ = 12413223223229 is a prime.

It is a super-2 number, since 2×12413223231421² (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 (12413223231821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6206611615710 + 6206611615711.

It is an arithmetic number, because the mean of its divisors is an integer number (6206611615711).

Almost surely, 2^{12413223231421} is an apocalyptic number.

It is an amenable number.

12413223231421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12413223231421 is an equidigital number, since it uses as much as digits as its factorization.

12413223231421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

Adding to 12413223231421 its reverse (12413232231421), we get a palindrome (24826455462842).

Subtracting 12413223231421 from its reverse (12413232231421), we obtain a square (9000000 = 3000²).

The spelling of 12413223231421 in words is "twelve trillion, four hundred thirteen billion, two hundred twenty-three million, two hundred thirty-one thousand, four hundred twenty-one".