222201221222 has 4 divisors (see below), whose sum is σ = 333301831836. Its totient is φ = 111100610610.

The previous prime is 222201221219. The next prime is 222201221267. The reversal of 222201221222 is 222122102222.

222201221222 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 222201221194 and 222201221203.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 55550305304 + ... + 55550305307.

It is an arithmetic number, because the mean of its divisors is an integer number (83325457959).

Almost surely, 2^222201221222 is an apocalyptic number.

222201221222 is a deficient number, since it is larger than the sum of its proper divisors (111100610614).

222201221222 is a wasteful number, since it uses less digits than its factorization.

222201221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111100610613.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 222201221222 its reverse (222122102222), we get a palindrome (444323323444).

The spelling of 222201221222 in words is "two hundred twenty-two billion, two hundred one million, two hundred twenty-one thousand, two hundred twenty-two".