21004334343323 has 8 divisors (see below), whose sum is σ = 22713072432192. Its totient is φ = 19348172811136.

The previous prime is 21004334343283. The next prime is 21004334343331. The reversal of 21004334343323 is 32334343340012.

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 21004334343323 - 2⁶ = 21004334343259 is a prime.

It is a super-2 number, since 2×21004334343323² (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 (21004334393323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13144138340 + ... + 13144139937.

It is an arithmetic number, because the mean of its divisors is an integer number (2839134054024).

Almost surely, 2^{21004334343323} is an apocalyptic number.

21004334343323 is a deficient number, since it is larger than the sum of its proper divisors (1708738088869).

21004334343323 is a wasteful number, since it uses less digits than its factorization.

21004334343323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26288278341.

The product of its (nonzero) digits is 186624, while the sum is 35.

Adding to 21004334343323 its reverse (32334343340012), we get a palindrome (53338677683335).

The spelling of 21004334343323 in words is "twenty-one trillion, four billion, three hundred thirty-four million, three hundred forty-three thousand, three hundred twenty-three".