2001000091011 has 16 divisors (see below), whose sum is σ = 2787767450880. Its totient is φ = 1274273367840.

The previous prime is 2001000091009. The next prime is 2001000091021. The reversal of 2001000091011 is 1101900001002.

It is not a de Polignac number, because 2001000091011 - 2¹ = 2001000091009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001000091021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19570120 + ... + 19672101.

It is an arithmetic number, because the mean of its divisors is an integer number (174235465680).

Almost surely, 2^{2001000091011} is an apocalyptic number.

2001000091011 is a deficient number, since it is larger than the sum of its proper divisors (786767359869).

2001000091011 is a wasteful number, since it uses less digits than its factorization.

2001000091011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39242986.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 2001000091011 its reverse (1101900001002), we get a palindrome (3102900092013).

The spelling of 2001000091011 in words is "two trillion, one billion, ninety-one thousand, eleven".