21303200221333 has 4 divisors (see below), whose sum is σ = 21456460654720. Its totient is φ = 21149939787948.

The previous prime is 21303200221327. The next prime is 21303200221393. The reversal of 21303200221333 is 33312200230312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21303200221333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21303200221298 and 21303200221307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303200221393) 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, 76630216485 + ... + 76630216762.

It is an arithmetic number, because the mean of its divisors is an integer number (5364115163680).

Almost surely, 2^{21303200221333} is an apocalyptic number.

It is an amenable number.

21303200221333 is a deficient number, since it is larger than the sum of its proper divisors (153260433387).

21303200221333 is a wasteful number, since it uses less digits than its factorization.

21303200221333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153260433386.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21303200221333 its reverse (33312200230312), we get a palindrome (54615400451645).

The spelling of 21303200221333 in words is "twenty-one trillion, three hundred three billion, two hundred million, two hundred twenty-one thousand, three hundred thirty-three".