223120212321 has 8 divisors (see below), whose sum is σ = 304412072800. Its totient is φ = 145287580032.

The previous prime is 223120212319. The next prime is 223120212347. The reversal of 223120212321 is 123212021322.

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

It is not a de Polignac number, because 223120212321 - 2¹ = 223120212319 is a prime.

It is a super-3 number, since 3×223120212321³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223120219321) 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, 864806896 + ... + 864807153.

It is an arithmetic number, because the mean of its divisors is an integer number (38051509100).

Almost surely, 2^223120212321 is an apocalyptic number.

It is an amenable number.

223120212321 is a deficient number, since it is larger than the sum of its proper divisors (81291860479).

223120212321 is a wasteful number, since it uses less digits than its factorization.

223120212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729614095.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 223120212321 its reverse (123212021322), we get a palindrome (346332233643).

The spelling of 223120212321 in words is "two hundred twenty-three billion, one hundred twenty million, two hundred twelve thousand, three hundred twenty-one".