21133110323 has 8 divisors (see below), whose sum is σ = 22909456416. Its totient is φ = 19378296000.

The previous prime is 21133110307. The next prime is 21133110407. The reversal of 21133110323 is 32301133112.

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 21133110323 - 2⁴ = 21133110307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21133110295 and 21133110304.

It is not an unprimeable number, because it can be changed into a prime (21133112323) 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, 5380898 + ... + 5384823.

It is an arithmetic number, because the mean of its divisors is an integer number (2863682052).

Almost surely, 2^21133110323 is an apocalyptic number.

21133110323 is a deficient number, since it is larger than the sum of its proper divisors (1776346093).

21133110323 is a wasteful number, since it uses less digits than its factorization.

21133110323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10765885.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21133110323 its reverse (32301133112), we get a palindrome (53434243435).

The spelling of 21133110323 in words is "twenty-one billion, one hundred thirty-three million, one hundred ten thousand, three hundred twenty-three".