200120210120321 has 8 divisors (see below), whose sum is σ = 200157701463720. Its totient is φ = 200082721886208.

The previous prime is 200120210120291. The next prime is 200120210120381. The reversal of 200120210120321 is 123021012021002.

It can be written as a sum of positive squares in 4 ways, for example, as 68194564000000 + 131925646120321 = 8258000^2 + 11485889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200120210120321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 200120210120321.

It is not an unprimeable number, because it can be changed into a prime (200120210120381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130012835 + ... + 131543063.

It is an arithmetic number, because the mean of its divisors is an integer number (25019712682965).

Almost surely, 2^{200120210120321} is an apocalyptic number.

It is an amenable number.

200120210120321 is a deficient number, since it is larger than the sum of its proper divisors (37491343399).

200120210120321 is a wasteful number, since it uses less digits than its factorization.

200120210120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554643.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 200120210120321 its reverse (123021012021002), we get a palindrome (323141222141323).

The spelling of 200120210120321 in words is "two hundred trillion, one hundred twenty billion, two hundred ten million, one hundred twenty thousand, three hundred twenty-one".