21126313235141 has 2 divisors, whose sum is σ = 21126313235142. Its totient is φ = 21126313235140.

The previous prime is 21126313235063. The next prime is 21126313235149. The reversal of 21126313235141 is 14153231362112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14729860202500 + 6396453032641 = 3837950^2 + 2529121^2 .

It is a cyclic number.

It is not a de Polignac number, because 21126313235141 - 2²⁶ = 21126246126277 is a prime.

It is a super-2 number, since 2×21126313235141² (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 (21126313235149) 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 as a sum of consecutive naturals, namely, 10563156617570 + 10563156617571.

It is an arithmetic number, because the mean of its divisors is an integer number (10563156617571).

Almost surely, 2^{21126313235141} is an apocalyptic number.

It is an amenable number.

21126313235141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21126313235141 is an equidigital number, since it uses as much as digits as its factorization.

21126313235141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

Adding to 21126313235141 its reverse (14153231362112), we get a palindrome (35279544597253).

The spelling of 21126313235141 in words is "twenty-one trillion, one hundred twenty-six billion, three hundred thirteen million, two hundred thirty-five thousand, one hundred forty-one".