21231300232333 has 2 divisors, whose sum is σ = 21231300232334. Its totient is φ = 21231300232332.

The previous prime is 21231300232301. The next prime is 21231300232343. The reversal of 21231300232333 is 33323200313212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11678985007209 + 9552315225124 = 3417453^2 + 3090682^2 .

It is a cyclic number.

It is not a de Polignac number, because 21231300232333 - 2⁵ = 21231300232301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21231300232343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615650116166 + 10615650116167.

It is an arithmetic number, because the mean of its divisors is an integer number (10615650116167).

Almost surely, 2^{21231300232333} is an apocalyptic number.

It is an amenable number.

21231300232333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21231300232333 is an equidigital number, since it uses as much as digits as its factorization.

21231300232333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 21231300232333 its reverse (33323200313212), we get a palindrome (54554500545545).

The spelling of 21231300232333 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred million, two hundred thirty-two thousand, three hundred thirty-three".