210020002001 has 4 divisors (see below), whose sum is σ = 210458457600. Its totient is φ = 209581546404.

The previous prime is 210020001977. The next prime is 210020002019. The reversal of 210020002001 is 100200020012.

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 210020002001 - 2¹⁰ = 210020000977 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 210020002001.

It is not an unprimeable number, because it can be changed into a prime (210020302001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219227081 + ... + 219228038.

It is an arithmetic number, because the mean of its divisors is an integer number (52614614400).

Almost surely, 2^210020002001 is an apocalyptic number.

It is an amenable number.

210020002001 is a deficient number, since it is larger than the sum of its proper divisors (438455599).

210020002001 is an equidigital number, since it uses as much as digits as its factorization.

210020002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438455598.

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

Adding to 210020002001 its reverse (100200020012), we get a palindrome (310220022013).

It can be divided in two parts, 2 and 10020002001, that multiplied together give a palindrome (20040004002).

The spelling of 210020002001 in words is "two hundred ten billion, twenty million, two thousand, one".