223012203221 has 4 divisors (see below), whose sum is σ = 223013361792. Its totient is φ = 223011044652.

The previous prime is 223012203187. The next prime is 223012203247. The reversal of 223012203221 is 122302210322.

It is a happy number.

223012203221 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223012203221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223012203193 and 223012203202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223092203221) 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, 213605 + ... + 701178.

It is an arithmetic number, because the mean of its divisors is an integer number (55753340448).

Almost surely, 2^223012203221 is an apocalyptic number.

It is an amenable number.

223012203221 is a deficient number, since it is larger than the sum of its proper divisors (1158571).

223012203221 is an equidigital number, since it uses as much as digits as its factorization.

223012203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158570.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 223012203221 its reverse (122302210322), we get a palindrome (345314413543).

The spelling of 223012203221 in words is "two hundred twenty-three billion, twelve million, two hundred three thousand, two hundred twenty-one".