201122110222001 has 4 divisors (see below), whose sum is σ = 208057355402100. Its totient is φ = 194186865041904.

The previous prime is 201122110221979. The next prime is 201122110222013. The reversal of 201122110222001 is 100222011221102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68437168200976 + 132684942021025 = 8272676^2 + 11518895^2 .

It is a cyclic number.

It is not a de Polignac number, because 201122110222001 - 2³⁸ = 200847232315057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201122110221001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3467622590006 + ... + 3467622590063.

It is an arithmetic number, because the mean of its divisors is an integer number (52014338850525).

Almost surely, 2^{201122110222001} is an apocalyptic number.

It is an amenable number.

201122110222001 is a deficient number, since it is larger than the sum of its proper divisors (6935245180099).

201122110222001 is an equidigital number, since it uses as much as digits as its factorization.

201122110222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935245180098.

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

Adding to 201122110222001 its reverse (100222011221102), we get a palindrome (301344121443103).

The spelling of 201122110222001 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred ten million, two hundred twenty-two thousand, one".