21223413441323 has 8 divisors (see below), whose sum is σ = 21378788984880. Its totient is φ = 21068044566400.

The previous prime is 21223413441211. The next prime is 21223413441341. The reversal of 21223413441323 is 32314431432212.

It is a happy number.

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

It is not a de Polignac number, because 21223413441323 - 2²⁶ = 21223346332459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21223413491323) 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, 4813148 + ... + 8100198.

It is an arithmetic number, because the mean of its divisors is an integer number (2672348623110).

Almost surely, 2^{21223413441323} is an apocalyptic number.

21223413441323 is a deficient number, since it is larger than the sum of its proper divisors (155375543557).

21223413441323 is a wasteful number, since it uses less digits than its factorization.

21223413441323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334317.

The product of its digits is 82944, while the sum is 35.

Adding to 21223413441323 its reverse (32314431432212), we get a palindrome (53537844873535).

The spelling of 21223413441323 in words is "twenty-one trillion, two hundred twenty-three billion, four hundred thirteen million, four hundred forty-one thousand, three hundred twenty-three".