2010001000121 has 4 divisors (see below), whose sum is σ = 2010224020452. Its totient is φ = 2009777979792.

The previous prime is 2010001000103. The next prime is 2010001000187. The reversal of 2010001000121 is 1210001000102.

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 789318526096 + 1220682474025 = 888436^2 + 1104845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2010001000121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2010001000099 and 2010001000108.

It is not an unprimeable number, because it can be changed into a prime (2010001003121) 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, 111496646 + ... + 111514671.

It is an arithmetic number, because the mean of its divisors is an integer number (502556005113).

Almost surely, 2^{2010001000121} is an apocalyptic number.

It is an amenable number.

2010001000121 is a deficient number, since it is larger than the sum of its proper divisors (223020331).

2010001000121 is an equidigital number, since it uses as much as digits as its factorization.

2010001000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223020330.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 2010001000121 its reverse (1210001000102), we get a palindrome (3220002000223).

The spelling of 2010001000121 in words is "two trillion, ten billion, one million, one hundred twenty-one", and thus it is an aban number.