210100020001 has 4 divisors (see below), whose sum is σ = 210111382404. Its totient is φ = 210088657600.

The previous prime is 210100019999. The next prime is 210100020041. The reversal of 210100020001 is 100020001012.

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 117576981025 + 92523038976 = 342895^2 + 304176^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100020001 - 2¹ = 210100019999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210100020041) 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, 5653420 + ... + 5690461.

It is an arithmetic number, because the mean of its divisors is an integer number (52527845601).

Almost surely, 2^210100020001 is an apocalyptic number.

It is an amenable number.

210100020001 is a deficient number, since it is larger than the sum of its proper divisors (11362403).

210100020001 is a wasteful number, since it uses less digits than its factorization.

210100020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11362402.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 210100020001 its reverse (100020001012), we get a palindrome (310120021013).

The spelling of 210100020001 in words is "two hundred ten billion, one hundred million, twenty thousand, one".