200232821 has 2 divisors, whose sum is σ = 200232822. Its totient is φ = 200232820.

The previous prime is 200232793. The next prime is 200232829. The reversal of 200232821 is 128232002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149181796 + 51051025 = 12214^2 + 7145^2 .

It is a cyclic number.

It is not a de Polignac number, because 200232821 - 2⁶ = 200232757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200232793 and 200232802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200232829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100116410 + 100116411.

It is an arithmetic number, because the mean of its divisors is an integer number (100116411).

Almost surely, 2^200232821 is an apocalyptic number.

It is an amenable number.

200232821 is a deficient number, since it is larger than the sum of its proper divisors (1).

200232821 is an equidigital number, since it uses as much as digits as its factorization.

200232821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 200232821 is about 14150.3646949469. The cubic root of 200232821 is about 585.0303838895.

Adding to 200232821 its reverse (128232002), we get a palindrome (328464823).

The spelling of 200232821 in words is "two hundred million, two hundred thirty-two thousand, eight hundred twenty-one".