2102010020 has 96 divisors (see below), whose sum is σ = 5065998336. Its totient is φ = 725155200.

The previous prime is 2102009993. The next prime is 2102010023. The reversal of 2102010020 is 200102012.

It is a super-2 number, since 2×2102010020² = 8836892248360800800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2102010023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 640985 + ... + 644255.

It is an arithmetic number, because the mean of its divisors is an integer number (52770816).

Almost surely, 2^2102010020 is an apocalyptic number.

2102010020 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 2102010020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2532999168).

2102010020 is an abundant number, since it is smaller than the sum of its proper divisors (2963988316).

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

2102010020 is a wasteful number, since it uses less digits than its factorization.

2102010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441 (or 3439 counting only the distinct ones).

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

The square root of 2102010020 is about 45847.6828204000. The cubic root of 2102010020 is about 1280.9876045012.

Adding to 2102010020 its reverse (200102012), we get a palindrome (2302112032).

The spelling of 2102010020 in words is "two billion, one hundred two million, ten thousand, twenty".