2001201122211 has 8 divisors (see below), whose sum is σ = 2668296806400. Its totient is φ = 1334119759752.

The previous prime is 2001201122201. The next prime is 2001201122213. The reversal of 2001201122211 is 1122211021002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001201122211 - 2¹³ = 2001201114019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001201122213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3250035 + ... + 3816428.

It is an arithmetic number, because the mean of its divisors is an integer number (333537100800).

Almost surely, 2^{2001201122211} is an apocalyptic number.

2001201122211 is a deficient number, since it is larger than the sum of its proper divisors (667095684189).

2001201122211 is an equidigital number, since it uses as much as digits as its factorization.

2001201122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160865.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2001201122211 its reverse (1122211021002), we get a palindrome (3123412143213).

The spelling of 2001201122211 in words is "two trillion, one billion, two hundred one million, one hundred twenty-two thousand, two hundred eleven".