2011020109 has 16 divisors (see below), whose sum is σ = 2384496000. Its totient is φ = 1659438144.

The previous prime is 2011020061. The next prime is 2011020113. The reversal of 2011020109 is 9010201102.

It is not a de Polignac number, because 2011020109 - 2¹⁷ = 2010889037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011020092 and 2011020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020139) 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, 56167 + ... + 84715.

It is an arithmetic number, because the mean of its divisors is an integer number (149031000).

Almost surely, 2^2011020109 is an apocalyptic number.

2011020109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2011020109 is a deficient number, since it is larger than the sum of its proper divisors (373475891).

2011020109 is a wasteful number, since it uses less digits than its factorization.

2011020109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28932.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 2011020109 is about 44844.3988587204. The cubic root of 2011020109 is about 1262.2308905096.

The spelling of 2011020109 in words is "two billion, eleven million, twenty thousand, one hundred nine".