200003030921 has 2 divisors, whose sum is σ = 200003030922. Its totient is φ = 200003030920.

The previous prime is 200003030837. The next prime is 200003030977. The reversal of 200003030921 is 129030300002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199952065600 + 50965321 = 447160^2 + 7139^2 .

It is a cyclic number.

It is not a de Polignac number, because 200003030921 - 2²⁶ = 199935922057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200003030893 and 200003030902.

It is not a weakly prime, because it can be changed into another prime (200003000921) 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, 100001515460 + 100001515461.

It is an arithmetic number, because the mean of its divisors is an integer number (100001515461).

Almost surely, 2^200003030921 is an apocalyptic number.

It is an amenable number.

200003030921 is a deficient number, since it is larger than the sum of its proper divisors (1).

200003030921 is an equidigital number, since it uses as much as digits as its factorization.

200003030921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 200003030921 its reverse (129030300002), we get a palindrome (329033330923).

The spelling of 200003030921 in words is "two hundred billion, three million, thirty thousand, nine hundred twenty-one".