21302011133 has 8 divisors (see below), whose sum is σ = 22973362776. Its totient is φ = 19635336000.

The previous prime is 21302011123. The next prime is 21302011153. The reversal of 21302011133 is 33111020312.

It can be written as a sum of positive squares in 4 ways, for example, as 3573887524 + 17728123609 = 59782^2 + 133147^2 .

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 21302011133 - 2¹⁶ = 21301945597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302011123) 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, 1159658 + ... + 1177883.

It is an arithmetic number, because the mean of its divisors is an integer number (2871670347).

Almost surely, 2^21302011133 is an apocalyptic number.

It is an amenable number.

21302011133 is a deficient number, since it is larger than the sum of its proper divisors (1671351643).

21302011133 is a wasteful number, since it uses less digits than its factorization.

21302011133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338255.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21302011133 its reverse (33111020312), we get a palindrome (54413031445).

The spelling of 21302011133 in words is "twenty-one billion, three hundred two million, eleven thousand, one hundred thirty-three".