10223211221 has 4 divisors (see below), whose sum is σ = 10223775744. Its totient is φ = 10222646700.

The previous prime is 10223211203. The next prime is 10223211233. The reversal of 10223211221 is 12211232201.

10223211221 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 an emirpimes, since its reverse is a distinct semiprime: 12211232201 = 7 ⋅1744461743.

It is a cyclic number.

It is not a de Polignac number, because 10223211221 - 2¹⁴ = 10223194837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10223211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10223211241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254165 + ... + 291626.

It is an arithmetic number, because the mean of its divisors is an integer number (2555943936).

Almost surely, 2^10223211221 is an apocalyptic number.

It is an amenable number.

10223211221 is a deficient number, since it is larger than the sum of its proper divisors (564523).

10223211221 is an equidigital number, since it uses as much as digits as its factorization.

10223211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564522.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10223211221 its reverse (12211232201), we get a palindrome (22434443422).

The spelling of 10223211221 in words is "ten billion, two hundred twenty-three million, two hundred eleven thousand, two hundred twenty-one".