221121200022202 has 32 divisors (see below), whose sum is σ = 341157568424400. Its totient is φ = 107447229542400.

The previous prime is 221121200022193. The next prime is 221121200022209. The reversal of 221121200022202 is 202220002121122.

It can be written as a sum of positive squares in 8 ways, for example, as 38025093269601 + 183096106752601 = 6166449^2 + 13531301^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221121200022202.

It is not an unprimeable number, because it can be changed into a prime (221121200022209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7296174 + ... + 22259302.

Almost surely, 2^{221121200022202} is an apocalyptic number.

221121200022202 is a deficient number, since it is larger than the sum of its proper divisors (120036368402198).

221121200022202 is a wasteful number, since it uses less digits than its factorization.

221121200022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14964642.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221121200022202 its reverse (202220002121122), we get a palindrome (423341202143324).

The spelling of 221121200022202 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred million, twenty-two thousand, two hundred two".