201122212211 has 8 divisors (see below), whose sum is σ = 203092073184. Its totient is φ = 199152682560.

The previous prime is 201122212163. The next prime is 201122212219. The reversal of 201122212211 is 112212221102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201122212211 - 2¹⁰ = 201122211187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201122212211.

It is not an unprimeable number, because it can be changed into a prime (201122212219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1240055 + ... + 1392831.

It is an arithmetic number, because the mean of its divisors is an integer number (25386509148).

Almost surely, 2^201122212211 is an apocalyptic number.

201122212211 is a deficient number, since it is larger than the sum of its proper divisors (1969860973).

201122212211 is a wasteful number, since it uses less digits than its factorization.

201122212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165661.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201122212211 its reverse (112212221102), we get a palindrome (313334433313).

The spelling of 201122212211 in words is "two hundred one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred eleven".