21041333323 has 4 divisors (see below), whose sum is σ = 21043897288. Its totient is φ = 21038769360.

The previous prime is 21041333311. The next prime is 21041333329. The reversal of 21041333323 is 32333314012.

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 21041333323 - 2²⁹ = 20504462411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21041333329) 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, 1269633 + ... + 1286098.

It is an arithmetic number, because the mean of its divisors is an integer number (5260974322).

Almost surely, 2^21041333323 is an apocalyptic number.

21041333323 is a deficient number, since it is larger than the sum of its proper divisors (2563965).

21041333323 is an equidigital number, since it uses as much as digits as its factorization.

21041333323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563964.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21041333323 its reverse (32333314012), we get a palindrome (53374647335).

The spelling of 21041333323 in words is "twenty-one billion, forty-one million, three hundred thirty-three thousand, three hundred twenty-three".