2001211030001 has 4 divisors (see below), whose sum is σ = 2001217546212. Its totient is φ = 2001204513792.

The previous prime is 2001211029971. The next prime is 2001211030009. The reversal of 2001211030001 is 1000301121002.

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 1723118280976 + 278092749025 = 1312676^2 + 527345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001211030001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001211030009) 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, 2773400 + ... + 3419673.

It is an arithmetic number, because the mean of its divisors is an integer number (500304386553).

Almost surely, 2^{2001211030001} is an apocalyptic number.

It is an amenable number.

2001211030001 is a deficient number, since it is larger than the sum of its proper divisors (6516211).

2001211030001 is an equidigital number, since it uses as much as digits as its factorization.

2001211030001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6516210.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 2001211030001 its reverse (1000301121002), we get a palindrome (3001512151003).

The spelling of 2001211030001 in words is "two trillion, one billion, two hundred eleven million, thirty thousand, one".