222002223221 has 4 divisors (see below), whose sum is σ = 222006127200. Its totient is φ = 221998319244.

The previous prime is 222002223217. The next prime is 222002223227. The reversal of 222002223221 is 122322200222.

222002223221 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.

It is a cyclic number.

It is not a de Polignac number, because 222002223221 - 2² = 222002223217 is a prime.

It is a super-2 number, since 2×222002223221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222002223193 and 222002223202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222002223227) 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, 1865411 + ... + 1980848.

It is an arithmetic number, because the mean of its divisors is an integer number (55501531800).

Almost surely, 2^222002223221 is an apocalyptic number.

It is an amenable number.

222002223221 is a deficient number, since it is larger than the sum of its proper divisors (3903979).

222002223221 is an equidigital number, since it uses as much as digits as its factorization.

222002223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903978.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 222002223221 its reverse (122322200222), we get a palindrome (344324423443).

The spelling of 222002223221 in words is "two hundred twenty-two billion, two million, two hundred twenty-three thousand, two hundred twenty-one".