200321001 has 6 divisors (see below), whose sum is σ = 289352570. Its totient is φ = 133547328.

The previous prime is 200320999. The next prime is 200321027. The reversal of 200321001 is 100123002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 182250000 + 18071001 = 13500^2 + 4251^2 .

It is not a de Polignac number, because 200321001 - 2¹ = 200320999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 22257889 = 200321001 / (2 + 0 + 0 + 3 + 2 + 1 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200321041) 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 5 ways as a sum of consecutive naturals, for example, 11128936 + ... + 11128953.

Almost surely, 2^200321001 is an apocalyptic number.

It is an amenable number.

200321001 is a deficient number, since it is larger than the sum of its proper divisors (89031569).

200321001 is a wasteful number, since it uses less digits than its factorization.

200321001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22257895 (or 22257892 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 200321001 is about 14153.4801727349. The cubic root of 200321001 is about 585.1162512779.

Adding to 200321001 its reverse (100123002), we get a palindrome (300444003).

It can be divided in two parts, 200 and 321001, that added together give a triangular number (321201 = T₈₀₁).

The spelling of 200321001 in words is "two hundred million, three hundred twenty-one thousand, one".