210120052001 has 4 divisors (see below), whose sum is σ = 210489332100. Its totient is φ = 209750771904.

The previous prime is 210120051949. The next prime is 210120052019. The reversal of 210120052001 is 100250021012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46948488976 + 163171563025 = 216676^2 + 403945^2 .

It is a cyclic number.

It is not a de Polignac number, because 210120052001 - 2¹⁸ = 210119789857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210120052061) 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, 184639196 + ... + 184640333.

It is an arithmetic number, because the mean of its divisors is an integer number (52622333025).

Almost surely, 2^210120052001 is an apocalyptic number.

It is an amenable number.

210120052001 is a deficient number, since it is larger than the sum of its proper divisors (369280099).

210120052001 is an equidigital number, since it uses as much as digits as its factorization.

210120052001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369280098.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 210120052001 its reverse (100250021012), we get a palindrome (310370073013).

The spelling of 210120052001 in words is "two hundred ten billion, one hundred twenty million, fifty-two thousand, one".