200121321 has 8 divisors (see below), whose sum is σ = 278429760. Its totient is φ = 127613552.

The previous prime is 200121247. The next prime is 200121329. The reversal of 200121321 is 123121002.

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

It is a cyclic number.

It is not a de Polignac number, because 200121321 - 2⁷ = 200121193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200121297 and 200121306.

It is not an unprimeable number, because it can be changed into a prime (200121329) 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, 1450086 + ... + 1450223.

It is an arithmetic number, because the mean of its divisors is an integer number (34803720).

Almost surely, 2^200121321 is an apocalyptic number.

It is an amenable number.

200121321 is a deficient number, since it is larger than the sum of its proper divisors (78308439).

200121321 is a wasteful number, since it uses less digits than its factorization.

200121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900335.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 200121321 is about 14146.4243185336. The cubic root of 200121321 is about 584.9217719926.

Adding to 200121321 its reverse (123121002), we get a palindrome (323242323).

The spelling of 200121321 in words is "two hundred million, one hundred twenty-one thousand, three hundred twenty-one".