2001300121 has 4 divisors (see below), whose sum is σ = 2070310500. Its totient is φ = 1932289744.

The previous prime is 2001300113. The next prime is 2001300131. The reversal of 2001300121 is 1210031002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210031002 = 2 ⋅605015501.

It can be written as a sum of positive squares in 2 ways, for example, as 686440000 + 1314860121 = 26200^2 + 36261^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001300121 - 2³ = 2001300113 is a prime.

It is a super-2 number, since 2×2001300121² = 8010404348629229282, 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 = 2001300098 and 2001300107.

It is not an unprimeable number, because it can be changed into a prime (2001300131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34505146 + ... + 34505203.

It is an arithmetic number, because the mean of its divisors is an integer number (517577625).

Almost surely, 2^2001300121 is an apocalyptic number.

It is an amenable number.

2001300121 is a deficient number, since it is larger than the sum of its proper divisors (69010379).

2001300121 is an equidigital number, since it uses as much as digits as its factorization.

2001300121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69010378.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2001300121 is about 44735.8929831517. The cubic root of 2001300121 is about 1260.1939990615.

Adding to 2001300121 its reverse (1210031002), we get a palindrome (3211331123).

The spelling of 2001300121 in words is "two billion, one million, three hundred thousand, one hundred twenty-one".