21124232341 has 2 divisors, whose sum is σ = 21124232342.
Its totient is φ = 21124232340.
The previous prime is 21124232299. The next prime is 21124232347. The reversal of 21124232341 is 14323242112.
Adding to 21124232341 its reverse (14323242112), we get a palindrome (35447474453).
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 20773456900 + 350775441 = 144130^2 + 18729^2
It is a cyclic number.
It is not a de Polignac number, because 21124232341 - 29 = 21124231829 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (21124232347) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562116170 + 10562116171.
It is an arithmetic number, because the mean of its divisors is an integer number (10562116171).
Almost surely, 221124232341 is an apocalyptic number.
It is an amenable number.
21124232341 is a deficient number, since it is larger than the sum of its proper divisors (1).
21124232341 is an equidigital number, since it uses as much as digits as its factorization.
21124232341 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 2304, while the sum is 25.
The spelling of 21124232341 in words is "twenty-one billion, one hundred twenty-four million, two hundred thirty-two thousand, three hundred forty-one".