210001013 has 4 divisors (see below), whose sum is σ = 210039360. Its totient is φ = 209962668.

The previous prime is 210001009. The next prime is 210001021. The reversal of 210001013 is 310100012.

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 210001013 - 2² = 210001009 is a prime.

It is a super-2 number, since 2×210001013² = 88200850922052338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9245 + ... + 22482.

It is an arithmetic number, because the mean of its divisors is an integer number (52509840).

Almost surely, 2^210001013 is an apocalyptic number.

It is an amenable number.

210001013 is a deficient number, since it is larger than the sum of its proper divisors (38347).

210001013 is an equidigital number, since it uses as much as digits as its factorization.

210001013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38346.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 210001013 is about 14491.4116979679. The cubic root of 210001013 is about 594.3931510197.

Adding to 210001013 its reverse (310100012), we get a palindrome (520101025).

The spelling of 210001013 in words is "two hundred ten million, one thousand, thirteen".