21133020330323 has 4 divisors (see below), whose sum is σ = 23054203996728. Its totient is φ = 19211836663920.

The previous prime is 21133020330319. The next prime is 21133020330341. The reversal of 21133020330323 is 32303302033112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21133020330323 - 2² = 21133020330319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21133020330292 and 21133020330301.

It is not an unprimeable number, because it can be changed into a prime (21133020320323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960591833186 + ... + 960591833207.

It is an arithmetic number, because the mean of its divisors is an integer number (5763550999182).

Almost surely, 2^{21133020330323} is an apocalyptic number.

21133020330323 is a deficient number, since it is larger than the sum of its proper divisors (1921183666405).

21133020330323 is a wasteful number, since it uses less digits than its factorization.

21133020330323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921183666404.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 21133020330323 its reverse (32303302033112), we get a palindrome (53436322363435).

The spelling of 21133020330323 in words is "twenty-one trillion, one hundred thirty-three billion, twenty million, three hundred thirty thousand, three hundred twenty-three".