21324232301 has 2 divisors, whose sum is σ = 21324232302. Its totient is φ = 21324232300.

The previous prime is 21324232273. The next prime is 21324232309. The reversal of 21324232301 is 10323242312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19063324900 + 2260907401 = 138070^2 + 47549^2 .

It is a cyclic number.

It is not a de Polignac number, because 21324232301 - 2¹⁰ = 21324231277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21324232309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10662116150 + 10662116151.

It is an arithmetic number, because the mean of its divisors is an integer number (10662116151).

Almost surely, 2^21324232301 is an apocalyptic number.

It is an amenable number.

21324232301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21324232301 is an equidigital number, since it uses as much as digits as its factorization.

21324232301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21324232301 its reverse (10323242312), we get a palindrome (31647474613).

The spelling of 21324232301 in words is "twenty-one billion, three hundred twenty-four million, two hundred thirty-two thousand, three hundred one".