204021229 has 2 divisors, whose sum is σ = 204021230. Its totient is φ = 204021228.

The previous prime is 204021217. The next prime is 204021241. The reversal of 204021229 is 922120402.

It is a balanced prime because it is at equal distance from previous prime (204021217) and next prime (204021241).

It can be written as a sum of positive squares in only one way, i.e., 130576329 + 73444900 = 11427^2 + 8570^2 .

It is a cyclic number.

It is not a de Polignac number, because 204021229 - 2⁷ = 204021101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204021329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102010614 + 102010615.

It is an arithmetic number, because the mean of its divisors is an integer number (102010615).

Almost surely, 2^204021229 is an apocalyptic number.

It is an amenable number.

204021229 is a deficient number, since it is larger than the sum of its proper divisors (1).

204021229 is an equidigital number, since it uses as much as digits as its factorization.

204021229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 204021229 is about 14283.6000014002. The cubic root of 204021229 is about 588.6969509377.

The spelling of 204021229 in words is "two hundred four million, twenty-one thousand, two hundred twenty-nine".