1002010000020 has 96 divisors (see below), whose sum is σ = 2878109528448. Its totient is φ = 260330982912.

The previous prime is 1002010000009. The next prime is 1002010000093. The reversal of 1002010000020 is 200000102001.

It is a happy number.

1002010000020 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 1002009999963 and 1002010000008.

It is a congruent number.

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, 535122 + ... + 1513398.

It is an arithmetic number, because the mean of its divisors is an integer number (29980307588).

Almost surely, 2^{1002010000020} is an apocalyptic number.

1002010000020 is a gapful number since it is divisible by the number (10) 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 1002010000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439054764224).

1002010000020 is an abundant number, since it is smaller than the sum of its proper divisors (1876099528428).

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

1002010000020 is a wasteful number, since it uses less digits than its factorization.

1002010000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978729 (or 978727 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 1002010000020 its reverse (200000102001), we get a palindrome (1202010102021).

The spelling of 1002010000020 in words is "one trillion, two billion, ten million, twenty", and thus it is an aban number and an uban number.