204030021233 has 2 divisors, whose sum is σ = 204030021234. Its totient is φ = 204030021232.

The previous prime is 204030021203. The next prime is 204030021277. The reversal of 204030021233 is 332120030402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179240463424 + 24789557809 = 423368^2 + 157447^2 .

It is a cyclic number.

It is not a de Polignac number, because 204030021233 - 2⁸ = 204030020977 is a prime.

It is not a weakly prime, because it can be changed into another prime (204030021203) 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, 102015010616 + 102015010617.

It is an arithmetic number, because the mean of its divisors is an integer number (102015010617).

Almost surely, 2^204030021233 is an apocalyptic number.

It is an amenable number.

204030021233 is a deficient number, since it is larger than the sum of its proper divisors (1).

204030021233 is an equidigital number, since it uses as much as digits as its factorization.

204030021233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 204030021233 its reverse (332120030402), we get a palindrome (536150051635).

The spelling of 204030021233 in words is "two hundred four billion, thirty million, twenty-one thousand, two hundred thirty-three".