21021231333323 has 32 divisors (see below), whose sum is σ = 23559528410880. Its totient is φ = 18629987402880.

The previous prime is 21021231333313. The next prime is 21021231333359. The reversal of 21021231333323 is 32333313212012.

It is a cyclic number.

It is not a de Polignac number, because 21021231333323 - 2⁶ = 21021231333259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21021231333313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 467417228 + ... + 467462198.

It is an arithmetic number, because the mean of its divisors is an integer number (736235262840).

Almost surely, 2^{21021231333323} is an apocalyptic number.

21021231333323 is a deficient number, since it is larger than the sum of its proper divisors (2538297077557).

21021231333323 is a wasteful number, since it uses less digits than its factorization.

21021231333323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59259.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 21021231333323 its reverse (32333313212012), we get a palindrome (53354544545335).

The spelling of 21021231333323 in words is "twenty-one trillion, twenty-one billion, two hundred thirty-one million, three hundred thirty-three thousand, three hundred twenty-three".