223444414421 has 4 divisors (see below), whose sum is σ = 223821218412. Its totient is φ = 223067610432.

The previous prime is 223444414393. The next prime is 223444414451. The reversal of 223444414421 is 124414444322.

223444414421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 100093140625 + 123351273796 = 316375^2 + 351214^2 .

It is a cyclic number.

It is not a de Polignac number, because 223444414421 - 2⁶ = 223444414357 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 (223444414451) 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 3 ways as a sum of consecutive naturals, for example, 188401106 + ... + 188402291.

It is an arithmetic number, because the mean of its divisors is an integer number (55955304603).

Almost surely, 2^223444414421 is an apocalyptic number.

It is an amenable number.

223444414421 is a deficient number, since it is larger than the sum of its proper divisors (376803991).

223444414421 is an equidigital number, since it uses as much as digits as its factorization.

223444414421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376803990.

The product of its digits is 98304, while the sum is 35.

Adding to 223444414421 its reverse (124414444322), we get a palindrome (347858858743).

The spelling of 223444414421 in words is "two hundred twenty-three billion, four hundred forty-four million, four hundred fourteen thousand, four hundred twenty-one".