21324232333 has 2 divisors, whose sum is σ = 21324232334. Its totient is φ = 21324232332.

The previous prime is 21324232309. The next prime is 21324232339. The reversal of 21324232333 is 33323242312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21315124009 + 9108324 = 145997^2 + 3018^2 .

It is a cyclic number.

It is not a de Polignac number, because 21324232333 - 2⁵ = 21324232301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21324232339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10662116166 + 10662116167.

It is an arithmetic number, because the mean of its divisors is an integer number (10662116167).

Almost surely, 2^21324232333 is an apocalyptic number.

It is an amenable number.

21324232333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21324232333 is an equidigital number, since it uses as much as digits as its factorization.

21324232333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 28.

Adding to 21324232333 its reverse (33323242312), we get a palindrome (54647474645).

The spelling of 21324232333 in words is "twenty-one billion, three hundred twenty-four million, two hundred thirty-two thousand, three hundred thirty-three".