223220012332321 has 4 divisors (see below), whose sum is σ = 223818457405972. Its totient is φ = 222621567258672.

The previous prime is 223220012332277. The next prime is 223220012332333. The reversal of 223220012332321 is 123233210022322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36500495566096 + 186719516766225 = 6041564^2 + 13664535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223220012332321 is a prime.

It is a super-3 number, since 3×223220012332321³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223220012332321.

It is not an unprimeable number, because it can be changed into a prime (223220012372321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299222536266 + ... + 299222537011.

It is an arithmetic number, because the mean of its divisors is an integer number (55954614351493).

Almost surely, 2^{223220012332321} is an apocalyptic number.

It is an amenable number.

223220012332321 is a deficient number, since it is larger than the sum of its proper divisors (598445073651).

223220012332321 is an equidigital number, since it uses as much as digits as its factorization.

223220012332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598445073650.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 223220012332321 its reverse (123233210022322), we get a palindrome (346453222354643).

The spelling of 223220012332321 in words is "two hundred twenty-three trillion, two hundred twenty billion, twelve million, three hundred thirty-two thousand, three hundred twenty-one".