21133020323 has 8 divisors (see below), whose sum is σ = 21821631360. Its totient is φ = 20444840640.

The previous prime is 21133020301. The next prime is 21133020329. The reversal of 21133020323 is 32302033112.

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 21133020323 - 2⁸ = 21133020067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21133020295 and 21133020304.

It is not an unprimeable number, because it can be changed into a prime (21133020329) 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, 6740 + ... + 205697.

It is an arithmetic number, because the mean of its divisors is an integer number (2727703920).

Almost surely, 2^21133020323 is an apocalyptic number.

21133020323 is a deficient number, since it is larger than the sum of its proper divisors (688611037).

21133020323 is a wasteful number, since it uses less digits than its factorization.

21133020323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215677.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21133020323 its reverse (32302033112), we get a palindrome (53435053435).

The spelling of 21133020323 in words is "twenty-one billion, one hundred thirty-three million, twenty thousand, three hundred twenty-three".