22110221220202 has 4 divisors (see below), whose sum is σ = 33165331830306. Its totient is φ = 11055110610100.

The previous prime is 22110221220149. The next prime is 22110221220271. The reversal of 22110221220202 is 20202212201122.

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

It can be written as a sum of positive squares in only one way, i.e., 19603987114321 + 2506234105881 = 4427639^2 + 1583109^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22110221220202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5527555305049 + ... + 5527555305052.

Almost surely, 2^{22110221220202} is an apocalyptic number.

22110221220202 is a deficient number, since it is larger than the sum of its proper divisors (11055110610104).

22110221220202 is a wasteful number, since it uses less digits than its factorization.

22110221220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11055110610103.

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

Adding to 22110221220202 its reverse (20202212201122), we get a palindrome (42312433421324).

The spelling of 22110221220202 in words is "twenty-two trillion, one hundred ten billion, two hundred twenty-one million, two hundred twenty thousand, two hundred two".