2000121210001 has 4 divisors (see below), whose sum is σ = 2000194424100. Its totient is φ = 2000047995904.

The previous prime is 2000121209927. The next prime is 2000121210029. The reversal of 2000121210001 is 1000121210002.

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 1618136643600 + 381984566401 = 1272060^2 + 618049^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000121210001 - 2¹⁵ = 2000121177233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2000121210001.

It is not an unprimeable number, because it can be changed into a prime (2000121210091) 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, 36566056 + ... + 36620713.

It is an arithmetic number, because the mean of its divisors is an integer number (500048606025).

Almost surely, 2^{2000121210001} is an apocalyptic number.

It is an amenable number.

2000121210001 is a deficient number, since it is larger than the sum of its proper divisors (73214099).

2000121210001 is an equidigital number, since it uses as much as digits as its factorization.

2000121210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73214098.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2000121210001 its reverse (1000121210002), we get a palindrome (3000242420003).

Subtracting from 2000121210001 its reverse (1000121210002), we obtain a palindrome (999999999999).

It can be divided in two parts, 2000121 and 210001, that added together give a palindrome (2210122).

The spelling of 2000121210001 in words is "two trillion, one hundred twenty-one million, two hundred ten thousand, one".