2102000120020 has 24 divisors (see below), whose sum is σ = 4426848405000. Its totient is φ = 838390876032.

The previous prime is 2102000119987. The next prime is 2102000120063. The reversal of 2102000120020 is 200210002012.

It can be written as a sum of positive squares in 4 ways, for example, as 463810033296 + 1638190086724 = 681036^2 + 1279918^2 .

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 = 2102000119979 and 2102000120006.

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, 150566095 + ... + 150580054.

It is an arithmetic number, because the mean of its divisors is an integer number (184452016875).

Almost surely, 2^{2102000120020} is an apocalyptic number.

2102000120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102000120020 is an abundant number, since it is smaller than the sum of its proper divisors (2324848284980).

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

2102000120020 is a wasteful number, since it uses less digits than its factorization.

2102000120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301146507 (or 301146505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2102000120020 its reverse (200210002012), we get a palindrome (2302210122032).

The spelling of 2102000120020 in words is "two trillion, one hundred two billion, one hundred twenty thousand, twenty".