2011112020 has 24 divisors (see below), whose sum is σ = 4225019904. Its totient is φ = 804123936.

The previous prime is 2011112009. The next prime is 2011112041. The reversal of 2011112020 is 202111102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2011111988 and 2011112006.

It is a congruent number.

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, 35029 + ... + 72451.

It is an arithmetic number, because the mean of its divisors is an integer number (176042496).

Almost surely, 2^2011112020 is an apocalyptic number.

2011112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011112020 is an abundant number, since it is smaller than the sum of its proper divisors (2213907884).

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

2011112020 is a wasteful number, since it uses less digits than its factorization.

2011112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40119 (or 40117 counting only the distinct ones).

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

The square root of 2011112020 is about 44845.4236238214. The cubic root of 2011112020 is about 1262.2501197448.

Adding to 2011112020 its reverse (202111102), we get a palindrome (2213223122).

It can be divided in two parts, 20111 and 12020, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 2011112020 in words is "two billion, eleven million, one hundred twelve thousand, twenty".