21303001133 has 8 divisors (see below), whose sum is σ = 21834007008. Its totient is φ = 20773612944.

The previous prime is 21303001117. The next prime is 21303001151. The reversal of 21303001133 is 33110030312.

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 21303001133 - 2⁴ = 21303001117 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 (21303001033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377735 + ... + 430452.

It is an arithmetic number, because the mean of its divisors is an integer number (2729250876).

Almost surely, 2^21303001133 is an apocalyptic number.

It is an amenable number.

21303001133 is a deficient number, since it is larger than the sum of its proper divisors (531005875).

21303001133 is an equidigital number, since it uses as much as digits as its factorization.

21303001133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808843.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21303001133 its reverse (33110030312), we get a palindrome (54413031445).

The spelling of 21303001133 in words is "twenty-one billion, three hundred three million, one thousand, one hundred thirty-three".