21021213003323 has 8 divisors (see below), whose sum is σ = 22642651852800. Its totient is φ = 19400405934528.

The previous prime is 21021213003317. The next prime is 21021213003347. The reversal of 21021213003323 is 32330031212012.

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 21021213003323 - 2⁸ = 21021213003067 is a prime.

It is a super-2 number, since 2×21021213003323² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21021213003313) 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, 157876058 + ... + 158009151.

It is an arithmetic number, because the mean of its divisors is an integer number (2830331481600).

Almost surely, 2^{21021213003323} is an apocalyptic number.

21021213003323 is a deficient number, since it is larger than the sum of its proper divisors (1621438849477).

21021213003323 is a wasteful number, since it uses less digits than its factorization.

21021213003323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315890341.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21021213003323 its reverse (32330031212012), we get a palindrome (53351244215335).

The spelling of 21021213003323 in words is "twenty-one trillion, twenty-one billion, two hundred thirteen million, three thousand, three hundred twenty-three".