223444421111 has 2 divisors, whose sum is σ = 223444421112. Its totient is φ = 223444421110.

The previous prime is 223444421099. The next prime is 223444421153. The reversal of 223444421111 is 111124444322.

223444421111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223444421111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223444421311) 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 as a sum of consecutive naturals, namely, 111722210555 + 111722210556.

It is an arithmetic number, because the mean of its divisors is an integer number (111722210556).

Almost surely, 2^223444421111 is an apocalyptic number.

223444421111 is a deficient number, since it is larger than the sum of its proper divisors (1).

223444421111 is an equidigital number, since it uses as much as digits as its factorization.

223444421111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6144, while the sum is 29.

Adding to 223444421111 its reverse (111124444322), we get a palindrome (334568865433).

The spelling of 223444421111 in words is "two hundred twenty-three billion, four hundred forty-four million, four hundred twenty-one thousand, one hundred eleven".