21310182041 has 2 divisors, whose sum is σ = 21310182042. Its totient is φ = 21310182040.

The previous prime is 21310182031. The next prime is 21310182053. The reversal of 21310182041 is 14028101312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21309868441 + 313600 = 145979^2 + 560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21310182041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21310181998 and 21310182016.

It is not a weakly prime, because it can be changed into another prime (21310182011) 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, 10655091020 + 10655091021.

It is an arithmetic number, because the mean of its divisors is an integer number (10655091021).

Almost surely, 2^21310182041 is an apocalyptic number.

It is an amenable number.

21310182041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21310182041 is an equidigital number, since it uses as much as digits as its factorization.

21310182041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 21310182041 its reverse (14028101312), we get a palindrome (35338283353).

The spelling of 21310182041 in words is "twenty-one billion, three hundred ten million, one hundred eighty-two thousand, forty-one".