2011210020 has 96 divisors (see below), whose sum is σ = 6350601600. Its totient is φ = 528308352.

The previous prime is 2011210013. The next prime is 2011210031. The reversal of 2011210020 is 200121102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2011209984 and 2011210011.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8386 + ... + 63974.

It is an arithmetic number, because the mean of its divisors is an integer number (66152100).

Almost surely, 2^2011210020 is an apocalyptic number.

2011210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011210020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3175300800).

2011210020 is an abundant number, since it is smaller than the sum of its proper divisors (4339391580).

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

2011210020 is a wasteful number, since it uses less digits than its factorization.

2011210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55674 (or 55666 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2011210020 is about 44846.5162526589. The cubic root of 2011210020 is about 1262.2706222498.

Adding to 2011210020 its reverse (200121102), we get a palindrome (2211331122).

The spelling of 2011210020 in words is "two billion, eleven million, two hundred ten thousand, twenty".