100002000000020 has 24 divisors (see below), whose sum is σ = 214472374470144. Its totient is φ = 39149719148576.

The previous prime is 100001999999983. The next prime is 100002000000047. The reversal of 100002000000020 is 20000000200001.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a junction number, because it is equal to n+sod(n) for n = 100001999999950 and 100002000000013.

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, 53192552252 + ... + 53192554131.

It is an arithmetic number, because the mean of its divisors is an integer number (8936348936256).

Almost surely, 2^{100002000000020} is an apocalyptic number.

100002000000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100002000000020 is an abundant number, since it is smaller than the sum of its proper divisors (114470374470124).

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

100002000000020 is a wasteful number, since it uses less digits than its factorization.

100002000000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106385106439 (or 106385106437 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

Adding to 100002000000020 its reverse (20000000200001), we get a palindrome (120002000200021).

The spelling of 100002000000020 in words is "one hundred trillion, two billion, twenty", and thus it is an aban number.