12223455556789 has 4 divisors (see below), whose sum is σ = 12553819220524. Its totient is φ = 11893091893056.

The previous prime is 12223455556783. The next prime is 12223455556811. The reversal of 12223455556789 is 98765555432221.

It is a happy number.

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 10895003374564 + 1328452182225 = 3300758^2 + 1152585^2 .

It is a cyclic number.

It is not a de Polignac number, because 12223455556789 - 2⁵ = 12223455556757 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 12223455556789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223455556783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165181831812 + ... + 165181831885.

It is an arithmetic number, because the mean of its divisors is an integer number (3138454805131).

Almost surely, 2^{12223455556789} is an apocalyptic number.

It is an amenable number.

12223455556789 is a deficient number, since it is larger than the sum of its proper divisors (330363663735).

12223455556789 is an equidigital number, since it uses as much as digits as its factorization.

12223455556789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330363663734.

The product of its digits is 181440000, while the sum is 64.

The spelling of 12223455556789 in words is "twelve trillion, two hundred twenty-three billion, four hundred fifty-five million, five hundred fifty-six thousand, seven hundred eighty-nine".