223330123210021 has 2 divisors, whose sum is σ = 223330123210022. Its totient is φ = 223330123210020.

The previous prime is 223330123209967. The next prime is 223330123210109. The reversal of 223330123210021 is 120012321033322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216174974352100 + 7155148857921 = 14702890^2 + 2674911^2 .

It is a cyclic number.

It is not a de Polignac number, because 223330123210021 - 2¹⁵ = 223330123177253 is a prime.

It is a super-3 number, since 3×223330123210021³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223330123210321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111665061605010 + 111665061605011.

It is an arithmetic number, because the mean of its divisors is an integer number (111665061605011).

Almost surely, 2^{223330123210021} is an apocalyptic number.

It is an amenable number.

223330123210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

223330123210021 is an equidigital number, since it uses as much as digits as its factorization.

223330123210021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 223330123210021 its reverse (120012321033322), we get a palindrome (343342444243343).

The spelling of 223330123210021 in words is "two hundred twenty-three trillion, three hundred thirty billion, one hundred twenty-three million, two hundred ten thousand, twenty-one".