21333211230133 has 4 divisors (see below), whose sum is σ = 23272594069248. Its totient is φ = 19393828391020.

The previous prime is 21333211230119. The next prime is 21333211230179. The reversal of 21333211230133 is 33103211233312.

It is a happy number.

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-21333211230133 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 (21333211230533) 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, 969691419541 + ... + 969691419562.

It is an arithmetic number, because the mean of its divisors is an integer number (5818148517312).

Almost surely, 2^{21333211230133} is an apocalyptic number.

It is an amenable number.

21333211230133 is a deficient number, since it is larger than the sum of its proper divisors (1939382839115).

21333211230133 is a wasteful number, since it uses less digits than its factorization.

21333211230133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939382839114.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 21333211230133 its reverse (33103211233312), we get a palindrome (54436422463445).

The spelling of 21333211230133 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred eleven million, two hundred thirty thousand, one hundred thirty-three".