14223120221 has 4 divisors (see below), whose sum is σ = 14223607932. Its totient is φ = 14222632512.

The previous prime is 14223120181. The next prime is 14223120269. The reversal of 14223120221 is 12202132241.

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 1225980196 + 12997140025 = 35014^2 + 114005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14223120221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14223120193 and 14223120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14223120281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197126 + ... + 259431.

It is an arithmetic number, because the mean of its divisors is an integer number (3555901983).

Almost surely, 2^14223120221 is an apocalyptic number.

It is an amenable number.

14223120221 is a deficient number, since it is larger than the sum of its proper divisors (487711).

14223120221 is an equidigital number, since it uses as much as digits as its factorization.

14223120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487710.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 14223120221 its reverse (12202132241), we get a palindrome (26425252462).

The spelling of 14223120221 in words is "fourteen billion, two hundred twenty-three million, one hundred twenty thousand, two hundred twenty-one".