223328380021721 has 8 divisors (see below), whose sum is σ = 243894915561024. Its totient is φ = 203245762965840.

The previous prime is 223328380021709. The next prime is 223328380021741. The reversal of 223328380021721 is 127120083823322.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223328380021721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (223328380021741) 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, 120979619891 + ... + 120979621736.

It is an arithmetic number, because the mean of its divisors is an integer number (30486864445128).

Almost surely, 2^{223328380021721} is an apocalyptic number.

It is an amenable number.

223328380021721 is a deficient number, since it is larger than the sum of its proper divisors (20566535539303).

223328380021721 is a wasteful number, since it uses less digits than its factorization.

223328380021721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241959241711.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 223328380021721 in words is "two hundred twenty-three trillion, three hundred twenty-eight billion, three hundred eighty million, twenty-one thousand, seven hundred twenty-one".