1211202222202 has 20 divisors (see below), whose sum is σ = 2119477782906. Its totient is φ = 519086664600.

The previous prime is 1211202222179. The next prime is 1211202222247. The reversal of 1211202222202 is 2022222021121.

It can be written as a sum of positive squares in only one way, i.e., 1036871756361 + 174330465841 = 1018269^2 + 417529^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1211202222202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 126109549 + ... + 126119152.

Almost surely, 2^{1211202222202} is an apocalyptic number.

1211202222202 is a deficient number, since it is larger than the sum of its proper divisors (908275560704).

1211202222202 is an frugal number, since it uses more digits than its factorization.

1211202222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252228731 (or 252228710 counting only the distinct ones).

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

Adding to 1211202222202 its reverse (2022222021121), we get a palindrome (3233424243323).

The spelling of 1211202222202 in words is "one trillion, two hundred eleven billion, two hundred two million, two hundred twenty-two thousand, two hundred two".