21033223323 has 8 divisors (see below), whose sum is σ = 32050626048. Its totient is φ = 12018984744.

The previous prime is 21033223313. The next prime is 21033223397. The reversal of 21033223323 is 32332233012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21033223323 - 2⁵ = 21033223291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21033223293 and 21033223302.

It is not an unprimeable number, because it can be changed into a prime (21033223313) 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, 500791011 + ... + 500791052.

It is an arithmetic number, because the mean of its divisors is an integer number (4006328256).

Almost surely, 2^21033223323 is an apocalyptic number.

21033223323 is a deficient number, since it is larger than the sum of its proper divisors (11017402725).

21033223323 is a wasteful number, since it uses less digits than its factorization.

21033223323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001582073.

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21033223323 its reverse (32332233012), we get a palindrome (53365456335).

The spelling of 21033223323 in words is "twenty-one billion, thirty-three million, two hundred twenty-three thousand, three hundred twenty-three".