21132133232333 has 4 divisors (see below), whose sum is σ = 21703271968380. Its totient is φ = 20560994496288.

The previous prime is 21132133232311. The next prime is 21132133232527. The reversal of 21132133232333 is 33323233123112.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15505308031684 + 5626825200649 = 3937678^2 + 2372093^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132133232333 - 2¹² = 21132133228237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21132133232333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132133252333) 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, 285569367968 + ... + 285569368041.

It is an arithmetic number, because the mean of its divisors is an integer number (5425817992095).

Almost surely, 2^{21132133232333} is an apocalyptic number.

It is an amenable number.

21132133232333 is a deficient number, since it is larger than the sum of its proper divisors (571138736047).

21132133232333 is an equidigital number, since it uses as much as digits as its factorization.

21132133232333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571138736046.

The product of its digits is 34992, while the sum is 32.

Adding to 21132133232333 its reverse (33323233123112), we get a palindrome (54455366355445).

The spelling of 21132133232333 in words is "twenty-one trillion, one hundred thirty-two billion, one hundred thirty-three million, two hundred thirty-two thousand, three hundred thirty-three".