21224001413323 has 4 divisors (see below), whose sum is σ = 21238332273288. Its totient is φ = 21209670553360.

The previous prime is 21224001413317. The next prime is 21224001413333. The reversal of 21224001413323 is 32331410042212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21224001413323 - 2⁴¹ = 19024978157771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21224001413291 and 21224001413300.

It is not an unprimeable number, because it can be changed into a prime (21224001413333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7165427761 + ... + 7165430722.

It is an arithmetic number, because the mean of its divisors is an integer number (5309583068322).

Almost surely, 2^{21224001413323} is an apocalyptic number.

21224001413323 is a deficient number, since it is larger than the sum of its proper divisors (14330859965).

21224001413323 is a wasteful number, since it uses less digits than its factorization.

21224001413323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14330859964.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21224001413323 its reverse (32331410042212), we get a palindrome (53555411455535).

The spelling of 21224001413323 in words is "twenty-one trillion, two hundred twenty-four billion, one million, four hundred thirteen thousand, three hundred twenty-three".