20102210020 has 48 divisors (see below), whose sum is σ = 43105709808. Its totient is φ = 7872768000.

The previous prime is 20102209991. The next prime is 20102210033. The reversal of 20102210020 is 2001220102.

It can be written as a sum of positive squares in 8 ways, for example, as 654234084 + 19447975936 = 25578^2 + 139456^2 .

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 = 20102209979 and 20102210006.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149770 + ... + 250270.

It is an arithmetic number, because the mean of its divisors is an integer number (898035621).

Almost surely, 2^20102210020 is an apocalyptic number.

20102210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102210020 is an abundant number, since it is smaller than the sum of its proper divisors (23003499788).

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

20102210020 is a wasteful number, since it uses less digits than its factorization.

20102210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100720 (or 100718 counting only the distinct ones).

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

Adding to 20102210020 its reverse (2001220102), we get a palindrome (22103430122).

The spelling of 20102210020 in words is "twenty billion, one hundred two million, two hundred ten thousand, twenty".