21325032241 has 2 divisors, whose sum is σ = 21325032242. Its totient is φ = 21325032240.

The previous prime is 21325032139. The next prime is 21325032259. The reversal of 21325032241 is 14223052312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14840112400 + 6484919841 = 121820^2 + 80529^2 .

It is a cyclic number.

It is not a de Polignac number, because 21325032241 - 2¹¹ = 21325030193 is a prime.

It is not a weakly prime, because it can be changed into another prime (21325032041) 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, 10662516120 + 10662516121.

It is an arithmetic number, because the mean of its divisors is an integer number (10662516121).

Almost surely, 2^21325032241 is an apocalyptic number.

It is an amenable number.

21325032241 is a deficient number, since it is larger than the sum of its proper divisors (1).

21325032241 is an equidigital number, since it uses as much as digits as its factorization.

21325032241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 21325032241 its reverse (14223052312), we get a palindrome (35548084553).

The spelling of 21325032241 in words is "twenty-one billion, three hundred twenty-five million, thirty-two thousand, two hundred forty-one".