222221011221222 has 64 divisors (see below), whose sum is σ = 485392469538816. Its totient is φ = 67409694817920.

The previous prime is 222221011221217. The next prime is 222221011221239. The reversal of 222221011221222 is 222122110122222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 222221011221192 and 222221011221201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126797203 + ... + 128537825.

It is an arithmetic number, because the mean of its divisors is an integer number (7584257336544).

Almost surely, 2^{222221011221222} is an apocalyptic number.

222221011221222 is an abundant number, since it is smaller than the sum of its proper divisors (263171458317594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222221011221222 is a wasteful number, since it uses less digits than its factorization.

222221011221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763765.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222221011221222 its reverse (222122110122222), we get a palindrome (444343121343444).

The spelling of 222221011221222 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, eleven million, two hundred twenty-one thousand, two hundred twenty-two".