2001012011 has 8 divisors (see below), whose sum is σ = 2050614384. Its totient is φ = 1951447680.

The previous prime is 2001012001. The next prime is 2001012019. The reversal of 2001012011 is 1102101002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001012011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001012011.

It is not an unprimeable number, because it can be changed into a prime (2001012019) 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, 117791 + ... + 133703.

It is an arithmetic number, because the mean of its divisors is an integer number (256326798).

Almost surely, 2^2001012011 is an apocalyptic number.

2001012011 is a deficient number, since it is larger than the sum of its proper divisors (49602373).

2001012011 is a wasteful number, since it uses less digits than its factorization.

2001012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19021.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2001012011 is about 44732.6727459918. The cubic root of 2001012011 is about 1260.1335230550.

Adding to 2001012011 its reverse (1102101002), we get a palindrome (3103113013).

The spelling of 2001012011 in words is "two billion, one million, twelve thousand, eleven".