200121130022321 has 4 divisors (see below), whose sum is σ = 203401804285044. Its totient is φ = 196840455759600.

The previous prime is 200121130022279. The next prime is 200121130022417. The reversal of 200121130022321 is 123220031121002.

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 8915981009296 + 191205149013025 = 2985964^2 + 13827695^2 .

It is a cyclic number.

It is not a de Polignac number, because 200121130022321 - 2³⁴ = 200103950153137 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 = 200121130022293 and 200121130022302.

It is not an unprimeable number, because it can be changed into a prime (200121130022621) 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, 1640337131270 + ... + 1640337131391.

It is an arithmetic number, because the mean of its divisors is an integer number (50850451071261).

Almost surely, 2^{200121130022321} is an apocalyptic number.

It is an amenable number.

200121130022321 is a deficient number, since it is larger than the sum of its proper divisors (3280674262723).

200121130022321 is an equidigital number, since it uses as much as digits as its factorization.

200121130022321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280674262722.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 200121130022321 its reverse (123220031121002), we get a palindrome (323341161143323).

The spelling of 200121130022321 in words is "two hundred trillion, one hundred twenty-one billion, one hundred thirty million, twenty-two thousand, three hundred twenty-one".