2001100202011 has 4 divisors (see below), whose sum is σ = 2001117110224. Its totient is φ = 2001083293800.

The previous prime is 2001100201981. The next prime is 2001100202071. The reversal of 2001100202011 is 1102020011002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001100202011 - 2³¹ = 1998952718363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001100202071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8275320 + ... + 8513701.

It is an arithmetic number, because the mean of its divisors is an integer number (500279277556).

Almost surely, 2^{2001100202011} is an apocalyptic number.

2001100202011 is a deficient number, since it is larger than the sum of its proper divisors (16908213).

2001100202011 is a wasteful number, since it uses less digits than its factorization.

2001100202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16908212.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2001100202011 its reverse (1102020011002), we get a palindrome (3103120213013).

The spelling of 2001100202011 in words is "two trillion, one billion, one hundred million, two hundred two thousand, eleven".