100020010020000 has 240 divisors, whose sum is σ = 374955015137472. Its totient is φ = 22861716480000.

The previous prime is 100020010019971. The next prime is 100020010020001. The reversal of 100020010020000 is 20010020001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

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 not an unprimeable number, because it can be changed into a prime (100020010020001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 118651441 + ... + 119491440.

Almost surely, 2^{100020010020000} is an apocalyptic number.

100020010020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020010020000 is an abundant number, since it is smaller than the sum of its proper divisors (274935005117472).

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

100020010020000 is an equidigital number, since it uses as much as digits as its factorization.

100020010020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238142921 (or 238142898 counting only the distinct ones).

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

Adding to 100020010020000 its reverse (20010020001), we get a palindrome (100040020040001).

Subtracting from 100020010020000 its reverse (20010020001), we obtain a palindrome (99999999999999).

The spelling of 100020010020000 in words is "one hundred trillion, twenty billion, ten million, twenty thousand".