21232002020305 has 8 divisors (see below), whose sum is σ = 25478566178112. Its totient is φ = 16985492447088.

The previous prime is 21232002020269. The next prime is 21232002020347. The reversal of 21232002020305 is 50302020023212.

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 21232002020305 - 2¹³ = 21232002012113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12785467 + ... + 14350336.

It is an arithmetic number, because the mean of its divisors is an integer number (3184820772264).

Almost surely, 2^{21232002020305} is an apocalyptic number.

It is an amenable number.

21232002020305 is a deficient number, since it is larger than the sum of its proper divisors (4246564157807).

21232002020305 is a wasteful number, since it uses less digits than its factorization.

21232002020305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27292295.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 21232002020305 its reverse (50302020023212), we get a palindrome (71534022043517).

The spelling of 21232002020305 in words is "twenty-one trillion, two hundred thirty-two billion, two million, twenty thousand, three hundred five".