21232002020303 has 4 divisors (see below), whose sum is σ = 21232167490248. Its totient is φ = 21231836550360.

The previous prime is 21232002020269. The next prime is 21232002020347. The reversal of 21232002020303 is 30302020023212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21232002020303 - 2¹⁸ = 21232001758159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232002020363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82542353 + ... + 82799178.

It is an arithmetic number, because the mean of its divisors is an integer number (5308041872562).

Almost surely, 2^{21232002020303} is an apocalyptic number.

21232002020303 is a deficient number, since it is larger than the sum of its proper divisors (165469945).

21232002020303 is a wasteful number, since it uses less digits than its factorization.

21232002020303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165469944.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21232002020303 its reverse (30302020023212), we get a palindrome (51534022043515).

The spelling of 21232002020303 in words is "twenty-one trillion, two hundred thirty-two billion, two million, twenty thousand, three hundred three".