2011011020 has 24 divisors (see below), whose sum is σ = 4224028704. Its totient is φ = 804231936.

The previous prime is 2011011011. The next prime is 2011011077. The reversal of 2011011020 is 201101102.

It is a super-2 number, since 2×2011011020² = 8088330645122880800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011010989 and 2011011007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129092 + ... + 143828.

It is an arithmetic number, because the mean of its divisors is an integer number (176001196).

Almost surely, 2^2011011020 is an apocalyptic number.

2011011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011011020 is an abundant number, since it is smaller than the sum of its proper divisors (2213017684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011011020 is a wasteful number, since it uses less digits than its factorization.

2011011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21569 (or 21567 counting only the distinct ones).

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

The square root of 2011011020 is about 44844.2975193056. The cubic root of 2011011020 is about 1262.2289889152.

Adding to 2011011020 its reverse (201101102), we get a palindrome (2212112122).

The spelling of 2011011020 in words is "two billion, eleven million, eleven thousand, twenty".