212223004403 has 4 divisors (see below), whose sum is σ = 212864161848. Its totient is φ = 211581846960.

The previous prime is 212223004393. The next prime is 212223004421. The reversal of 212223004403 is 304400322212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212223004403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212223004453) 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, 320578226 + ... + 320578887.

It is an arithmetic number, because the mean of its divisors is an integer number (53216040462).

Almost surely, 2^212223004403 is an apocalyptic number.

212223004403 is a deficient number, since it is larger than the sum of its proper divisors (641157445).

212223004403 is an equidigital number, since it uses as much as digits as its factorization.

212223004403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641157444.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 212223004403 its reverse (304400322212), we get a palindrome (516623326615).

The spelling of 212223004403 in words is "two hundred twelve billion, two hundred twenty-three million, four thousand, four hundred three".