20201000220001 has 4 divisors (see below), whose sum is σ = 20207691511600. Its totient is φ = 20194308928404.

The previous prime is 20201000219909. The next prime is 20201000220031. The reversal of 20201000220001 is 10002200010202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20201000220001 - 2³⁵ = 20166640481633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201000220001.

It is not an unprimeable number, because it can be changed into a prime (20201000220031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3345641271 + ... + 3345647308.

It is an arithmetic number, because the mean of its divisors is an integer number (5051922877900).

Almost surely, 2^{20201000220001} is an apocalyptic number.

It is an amenable number.

20201000220001 is a deficient number, since it is larger than the sum of its proper divisors (6691291599).

20201000220001 is an equidigital number, since it uses as much as digits as its factorization.

20201000220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691291598.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20201000220001 its reverse (10002200010202), we get a palindrome (30203200230203).

The spelling of 20201000220001 in words is "twenty trillion, two hundred one billion, two hundred twenty thousand, one".