2000121024917 has 2 divisors, whose sum is σ = 2000121024918. Its totient is φ = 2000121024916.

The previous prime is 2000121024851. The next prime is 2000121024949. The reversal of 2000121024917 is 7194201210002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1587534480676 + 412586544241 = 1259974^2 + 642329^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000121024917 - 2⁴⁰ = 900609397141 is a prime.

It is a super-2 number, since 2×2000121024917² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2000121024917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000124024917) 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 as a sum of consecutive naturals, namely, 1000060512458 + 1000060512459.

It is an arithmetic number, because the mean of its divisors is an integer number (1000060512459).

Almost surely, 2^{2000121024917} is an apocalyptic number.

It is an amenable number.

2000121024917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000121024917 is an equidigital number, since it uses as much as digits as its factorization.

2000121024917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 2000121024917 its reverse (7194201210002), we get a palindrome (9194322234919).

The spelling of 2000121024917 in words is "two trillion, one hundred twenty-one million, twenty-four thousand, nine hundred seventeen".