200243002021 has 2 divisors, whose sum is σ = 200243002022. Its totient is φ = 200243002020.

The previous prime is 200243002009. The next prime is 200243002067. The reversal of 200243002021 is 120200342002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196682493121 + 3560508900 = 443489^2 + 59670^2 .

It is a cyclic number.

It is not a de Polignac number, because 200243002021 - 2⁹ = 200243001509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200243001986 and 200243002004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200243002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100121501010 + 100121501011.

It is an arithmetic number, because the mean of its divisors is an integer number (100121501011).

Almost surely, 2^200243002021 is an apocalyptic number.

It is an amenable number.

200243002021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200243002021 is an equidigital number, since it uses as much as digits as its factorization.

200243002021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 200243002021 its reverse (120200342002), we get a palindrome (320443344023).

The spelling of 200243002021 in words is "two hundred billion, two hundred forty-three million, two thousand, twenty-one".