200219021 has 2 divisors, whose sum is σ = 200219022. Its totient is φ = 200219020.

The previous prime is 200219011. The next prime is 200219027. The reversal of 200219021 is 120912002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188073796 + 12145225 = 13714^2 + 3485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200219021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200219027) 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, 100109510 + 100109511.

It is an arithmetic number, because the mean of its divisors is an integer number (100109511).

Almost surely, 2^200219021 is an apocalyptic number.

It is an amenable number.

200219021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200219021 is an equidigital number, since it uses as much as digits as its factorization.

200219021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 200219021 is about 14149.8770666038. The cubic root of 200219021 is about 585.0169435276.

The spelling of 200219021 in words is "two hundred million, two hundred nineteen thousand, twenty-one".