201221122202211 has 16 divisors (see below), whose sum is σ = 268863724108800. Its totient is φ = 133862985842208.

The previous prime is 201221122202209. The next prime is 201221122202237. The reversal of 201221122202211 is 112202221122102.

It is not a de Polignac number, because 201221122202211 - 2¹ = 201221122202209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201221122202201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42030220 + ... + 46572326.

It is an arithmetic number, because the mean of its divisors is an integer number (16803982756800).

Almost surely, 2^{201221122202211} is an apocalyptic number.

201221122202211 is a deficient number, since it is larger than the sum of its proper divisors (67642601906589).

201221122202211 is a wasteful number, since it uses less digits than its factorization.

201221122202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573418.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 201221122202211 its reverse (112202221122102), we get a palindrome (313423343324313).

The spelling of 201221122202211 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred two thousand, two hundred eleven".