201122121021211 has 6 divisors (see below), whose sum is σ = 217783125129660. Its totient is φ = 185651188634808.

The previous prime is 201122121021197. The next prime is 201122121021257. The reversal of 201122121021211 is 112120121221102.

It is a happy number.

It is not a de Polignac number, because 201122121021211 - 2⁵ = 201122121021179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201122121027211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 595035860841 + ... + 595035861178.

It is an arithmetic number, because the mean of its divisors is an integer number (36297187521610).

Almost surely, 2^{201122121021211} is an apocalyptic number.

201122121021211 is a deficient number, since it is larger than the sum of its proper divisors (16661004108449).

201122121021211 is a wasteful number, since it uses less digits than its factorization.

201122121021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190071722045 (or 1190071722032 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201122121021211 its reverse (112120121221102), we get a palindrome (313242242242313).

The spelling of 201122121021211 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred twenty-one million, twenty-one thousand, two hundred eleven".