2001222110201 has 4 divisors (see below), whose sum is σ = 2001231068772. Its totient is φ = 2001213151632.

The previous prime is 2001222110141. The next prime is 2001222110219. The reversal of 2001222110201 is 1020112221002.

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 1393639275625 + 607582834576 = 1180525^2 + 779476^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001222110201 - 2⁶ = 2001222110137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001222113201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4135406 + ... + 4593911.

It is an arithmetic number, because the mean of its divisors is an integer number (500307767193).

Almost surely, 2^{2001222110201} is an apocalyptic number.

It is an amenable number.

2001222110201 is a deficient number, since it is larger than the sum of its proper divisors (8958571).

2001222110201 is an equidigital number, since it uses as much as digits as its factorization.

2001222110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8958570.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2001222110201 its reverse (1020112221002), we get a palindrome (3021334331203).

The spelling of 2001222110201 in words is "two trillion, one billion, two hundred twenty-two million, one hundred ten thousand, two hundred one".