2001222000001 has 4 divisors (see below), whose sum is σ = 2287110857152. Its totient is φ = 1715333142852.

The previous prime is 2001221999963. The next prime is 2001222000031. The reversal of 2001222000001 is 1000002221002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2001222000001 - 2¹³ = 2001221991809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001222000031) 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, 142944428565 + ... + 142944428578.

It is an arithmetic number, because the mean of its divisors is an integer number (571777714288).

Almost surely, 2^{2001222000001} is an apocalyptic number.

It is an amenable number.

2001222000001 is a deficient number, since it is larger than the sum of its proper divisors (285888857151).

2001222000001 is an equidigital number, since it uses as much as digits as its factorization.

2001222000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285888857150.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2001222000001 its reverse (1000002221002), we get a palindrome (3001224221003).

The spelling of 2001222000001 in words is "two trillion, one billion, two hundred twenty-two million, one", and thus it is an aban number.