200020100120001 has 96 divisors (see below), whose sum is σ = 354779666841600. Its totient is φ = 105990382517760.

The previous prime is 200020100119969. The next prime is 200020100120003. The reversal of 200020100120001 is 100021001020002.

It is not a de Polignac number, because 200020100120001 - 2⁵ = 200020100119969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (200020100120003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38060016 + ... + 42995406.

It is an arithmetic number, because the mean of its divisors is an integer number (3695621529600).

Almost surely, 2^{200020100120001} is an apocalyptic number.

200020100120001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

200020100120001 is a deficient number, since it is larger than the sum of its proper divisors (154759566721599).

200020100120001 is a wasteful number, since it uses less digits than its factorization.

200020100120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935979 (or 4935976 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 200020100120001 its reverse (100021001020002), we get a palindrome (300041101140003).

Subtracting from 200020100120001 its reverse (100021001020002), we obtain a palindrome (99999099099999).

The spelling of 200020100120001 in words is "two hundred trillion, twenty billion, one hundred million, one hundred twenty thousand, one".