21323332201205 has 8 divisors (see below), whose sum is σ = 25588152762072. Its totient is φ = 17058563013888.

The previous prime is 21323332201169. The next prime is 21323332201277. The reversal of 21323332201205 is 50210223332312.

It can be written as a sum of positive squares in 4 ways, for example, as 7050947351044 + 14272384850161 = 2655362^2 + 3777881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21323332201205 - 2⁶ = 21323332201141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11924264 + ... + 13595393.

It is an arithmetic number, because the mean of its divisors is an integer number (3198519095259).

Almost surely, 2^{21323332201205} is an apocalyptic number.

It is an amenable number.

21323332201205 is a deficient number, since it is larger than the sum of its proper divisors (4264820560867).

21323332201205 is a wasteful number, since it uses less digits than its factorization.

21323332201205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25686775.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 21323332201205 its reverse (50210223332312), we get a palindrome (71533555533517).

The spelling of 21323332201205 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred thirty-two million, two hundred one thousand, two hundred five".