21023133323 has 8 divisors (see below), whose sum is σ = 21476116992. Its totient is φ = 20570386536.

The previous prime is 21023133293. The next prime is 21023133353. The reversal of 21023133323 is 32333132012.

It is an interprime number because it is at equal distance from previous prime (21023133293) and next prime (21023133353).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21023133323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21023133353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126386 + ... + 240872.

It is an arithmetic number, because the mean of its divisors is an integer number (2684514624).

Almost surely, 2^21023133323 is an apocalyptic number.

21023133323 is a deficient number, since it is larger than the sum of its proper divisors (452983669).

21023133323 is a wasteful number, since it uses less digits than its factorization.

21023133323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118441.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21023133323 its reverse (32333132012), we get a palindrome (53356265335).

The spelling of 21023133323 in words is "twenty-one billion, twenty-three million, one hundred thirty-three thousand, three hundred twenty-three".