21103232333 has 2 divisors, whose sum is σ = 21103232334. Its totient is φ = 21103232332.

The previous prime is 21103232263. The next prime is 21103232363. The reversal of 21103232333 is 33323230112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20670675529 + 432556804 = 143773^2 + 20798^2 .

It is a cyclic number.

It is not a de Polignac number, because 21103232333 - 2¹⁴ = 21103215949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21103232299 and 21103232308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21103232363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551616166 + 10551616167.

It is an arithmetic number, because the mean of its divisors is an integer number (10551616167).

Almost surely, 2^21103232333 is an apocalyptic number.

It is an amenable number.

21103232333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103232333 is an equidigital number, since it uses as much as digits as its factorization.

21103232333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21103232333 its reverse (33323230112), we get a palindrome (54426462445).

The spelling of 21103232333 in words is "twenty-one billion, one hundred three million, two hundred thirty-two thousand, three hundred thirty-three".