21030301241 has 2 divisors, whose sum is σ = 21030301242. Its totient is φ = 21030301240.

The previous prime is 21030301177. The next prime is 21030301249. The reversal of 21030301241 is 14210303012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21026160016 + 4141225 = 145004^2 + 2035^2 .

It is a cyclic number.

It is not a de Polignac number, because 21030301241 - 2⁶ = 21030301177 is a prime.

It is a super-2 number, since 2×21030301241² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21030301249) 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, 10515150620 + 10515150621.

It is an arithmetic number, because the mean of its divisors is an integer number (10515150621).

Almost surely, 2^21030301241 is an apocalyptic number.

It is an amenable number.

21030301241 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030301241 is an equidigital number, since it uses as much as digits as its factorization.

21030301241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21030301241 its reverse (14210303012), we get a palindrome (35240604253).

The spelling of 21030301241 in words is "twenty-one billion, thirty million, three hundred one thousand, two hundred forty-one".