2001010105 has 4 divisors (see below), whose sum is σ = 2401212132. Its totient is φ = 1600808080.

The previous prime is 2001010093. The next prime is 2001010127. The reversal of 2001010105 is 5010101002.

It is a happy number.

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 415059129 + 1585950976 = 20373^2 + 39824^2 .

It is not a de Polignac number, because 2001010105 - 2⁷ = 2001009977 is a prime.

It is a super-2 number, since 2×2001010105² = 8008082880624222050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001010091 and 2001010100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200101006 + ... + 200101015.

It is an arithmetic number, because the mean of its divisors is an integer number (600303033).

Almost surely, 2^2001010105 is an apocalyptic number.

It is an amenable number.

2001010105 is a deficient number, since it is larger than the sum of its proper divisors (400202027).

2001010105 is an equidigital number, since it uses as much as digits as its factorization.

2001010105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400202026.

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

The square root of 2001010105 is about 44732.6514416483. The cubic root of 2001010105 is about 1260.1331229549.

Adding to 2001010105 its reverse (5010101002), we get a palindrome (7011111107).

The spelling of 2001010105 in words is "two billion, one million, ten thousand, one hundred five".