20102001012020 has 48 divisors (see below), whose sum is σ = 42267573747840. Its totient is φ = 8030635519104.

The previous prime is 20102001012011. The next prime is 20102001012031. The reversal of 20102001012020 is 2021010020102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20102001011992 and 20102001012010.

It is a congruent number.

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, 504459737 + ... + 504499583.

It is an arithmetic number, because the mean of its divisors is an integer number (880574453080).

Almost surely, 2^{20102001012020} is an apocalyptic number.

20102001012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102001012020 is an abundant number, since it is smaller than the sum of its proper divisors (22165572735820).

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

20102001012020 is a wasteful number, since it uses less digits than its factorization.

20102001012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71112 (or 71110 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20102001012020 its reverse (2021010020102), we get a palindrome (22123011032122).

The spelling of 20102001012020 in words is "twenty trillion, one hundred two billion, one million, twelve thousand, twenty".