222211230221 has 4 divisors (see below), whose sum is σ = 222463457244. Its totient is φ = 221959003200.

The previous prime is 222211230181. The next prime is 222211230239. The reversal of 222211230221 is 122032112222.

222211230221 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.

It can be written as a sum of positive squares in 2 ways, for example, as 57386598025 + 164824632196 = 239555^2 + 405986^2 .

It is a cyclic number.

It is not a de Polignac number, because 222211230221 - 2¹⁰ = 222211229197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222211230193 and 222211230202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222211230121) 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, 126112190 + ... + 126113951.

It is an arithmetic number, because the mean of its divisors is an integer number (55615864311).

Almost surely, 2^222211230221 is an apocalyptic number.

It is an amenable number.

222211230221 is a deficient number, since it is larger than the sum of its proper divisors (252227023).

222211230221 is an equidigital number, since it uses as much as digits as its factorization.

222211230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252227022.

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

Adding to 222211230221 its reverse (122032112222), we get a palindrome (344243342443).

The spelling of 222211230221 in words is "two hundred twenty-two billion, two hundred eleven million, two hundred thirty thousand, two hundred twenty-one".