201122211 has 8 divisors (see below), whose sum is σ = 268911360. Its totient is φ = 133707272.

The previous prime is 201122183. The next prime is 201122237. The reversal of 201122211 is 112221102.

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 201122211 - 2¹¹ = 201120163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201129211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 92295 + ... + 94448.

It is an arithmetic number, because the mean of its divisors is an integer number (33613920).

Almost surely, 2^201122211 is an apocalyptic number.

201122211 is a deficient number, since it is larger than the sum of its proper divisors (67789149).

201122211 is a wasteful number, since it uses less digits than its factorization.

201122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187105.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 201122211 is about 14181.7562734663. The cubic root of 201122211 is about 585.8952965172.

Adding to 201122211 its reverse (112221102), we get a palindrome (313343313).

The spelling of 201122211 in words is "two hundred one million, one hundred twenty-two thousand, two hundred eleven".