2001103011 has 6 divisors (see below), whose sum is σ = 2890482140. Its totient is φ = 1334068668.

The previous prime is 2001103007. The next prime is 2001103043. The reversal of 2001103011 is 1103011002.

It is not a de Polignac number, because 2001103011 - 2² = 2001103007 is a prime.

It is a super-2 number, since 2×2001103011² = 8008826521266532242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 222344779 = 2001103011 / (2 + 0 + 0 + 1 + 1 + 0 + 3 + 0 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001102984 and 2001103002.

It is not an unprimeable number, because it can be changed into a prime (2001103061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111172381 + ... + 111172398.

Almost surely, 2^2001103011 is an apocalyptic number.

2001103011 is a deficient number, since it is larger than the sum of its proper divisors (889379129).

2001103011 is a wasteful number, since it uses less digits than its factorization.

2001103011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222344785 (or 222344782 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 2001103011 is about 44733.6898880475. The cubic root of 2001103011 is about 1260.1526251246.

Adding to 2001103011 its reverse (1103011002), we get a palindrome (3104114013).

The spelling of 2001103011 in words is "two billion, one million, one hundred three thousand, eleven".