1223330333221 has 8 divisors (see below), whose sum is σ = 1224043006680. Its totient is φ = 1222617825792.

The previous prime is 1223330333207. The next prime is 1223330333233.

1223330333221 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 141233156100 + 1082097177121 = 375810^2 + 1040239^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1223330333221 - 2¹³ = 1223330325029 is a prime.

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 1223330333221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223330333921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16595181 + ... + 16668733.

It is an arithmetic number, because the mean of its divisors is an integer number (153005375835).

Almost surely, 2^{1223330333221} is an apocalyptic number.

It is an amenable number.

1223330333221 is a deficient number, since it is larger than the sum of its proper divisors (712673459).

1223330333221 is an equidigital number, since it uses as much as digits as its factorization.

1223330333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83015.

The product of its (nonzero) digits is 11664, while the sum is 28.

It can be divided in two parts, 1223330 and 333221, that added together give a palindrome (1556551).

The spelling of 1223330333221 in words is "one trillion, two hundred twenty-three billion, three hundred thirty million, three hundred thirty-three thousand, two hundred twenty-one".