1223345433221 has 16 divisors (see below), whose sum is σ = 1247143392000. Its totient is φ = 1199713202688.

The previous prime is 1223345433103. The next prime is 1223345433239.

1223345433221 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1223345433221 - 2¹⁸ = 1223345171077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223345436221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74436221 + ... + 74452653.

It is an arithmetic number, because the mean of its divisors is an integer number (77946462000).

Almost surely, 2^{1223345433221} is an apocalyptic number.

It is an amenable number.

1223345433221 is a deficient number, since it is larger than the sum of its proper divisors (23797958779).

1223345433221 is a wasteful number, since it uses less digits than its factorization.

1223345433221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21388.

The product of its digits is 103680, while the sum is 35.

It can be divided in two parts, 122334 and 5433221, that added together give a palindrome (5555555).

The spelling of 1223345433221 in words is "one trillion, two hundred twenty-three billion, three hundred forty-five million, four hundred thirty-three thousand, two hundred twenty-one".