221222221222202 has 32 divisors (see below), whose sum is σ = 346678275643920. Its totient is φ = 105738427468800.

The previous prime is 221222221222199. The next prime is 221222221222273. The reversal of 221222221222202 is 202222122222122.

It can be written as a sum of positive squares in 8 ways, for example, as 188224652811001 + 32997568411201 = 13719499^2 + 5744351^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925895618 + ... + 926134514.

Almost surely, 2^{221222221222202} is an apocalyptic number.

221222221222202 is a deficient number, since it is larger than the sum of its proper divisors (125456054421718).

221222221222202 is a wasteful number, since it uses less digits than its factorization.

221222221222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397106.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 221222221222202 its reverse (202222122222122), we get a palindrome (423444343444324).

The spelling of 221222221222202 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred two".