200021200122001 has 8 divisors (see below), whose sum is σ = 212331593059560. Its totient is φ = 187771300516608.

The previous prime is 200021200121989. The next prime is 200021200122019. The reversal of 200021200122001 is 100221002120002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 85093687941376 + 114927512180625 = 9224624^2 + 10720425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200021200122001 - 2²⁹ = 200020663251089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200021200122071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15123326226 + ... + 15123339451.

It is an arithmetic number, because the mean of its divisors is an integer number (26541449132445).

Almost surely, 2^{200021200122001} is an apocalyptic number.

It is an amenable number.

200021200122001 is a deficient number, since it is larger than the sum of its proper divisors (12310392937559).

200021200122001 is a wasteful number, since it uses less digits than its factorization.

200021200122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30246666083.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 200021200122001 its reverse (100221002120002), we get a palindrome (300242202242003).

The spelling of 200021200122001 in words is "two hundred trillion, twenty-one billion, two hundred million, one hundred twenty-two thousand, one".