21343434041 has 2 divisors, whose sum is σ = 21343434042. Its totient is φ = 21343434040.

The previous prime is 21343434017. The next prime is 21343434061. The reversal of 21343434041 is 14043434312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19086804025 + 2256630016 = 138155^2 + 47504^2 .

It is a cyclic number.

It is not a de Polignac number, because 21343434041 - 2⁶ = 21343433977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21343433995 and 21343434013.

It is not a weakly prime, because it can be changed into another prime (21343434061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671717020 + 10671717021.

It is an arithmetic number, because the mean of its divisors is an integer number (10671717021).

Almost surely, 2^21343434041 is an apocalyptic number.

It is an amenable number.

21343434041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21343434041 is an equidigital number, since it uses as much as digits as its factorization.

21343434041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21343434041 its reverse (14043434312), we get a palindrome (35386868353).

The spelling of 21343434041 in words is "twenty-one billion, three hundred forty-three million, four hundred thirty-four thousand, forty-one".