204021151 has 2 divisors, whose sum is σ = 204021152. Its totient is φ = 204021150.

The previous prime is 204021121. The next prime is 204021163. The reversal of 204021151 is 151120402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204021151 - 2⁹ = 204020639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204021101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102010575 + 102010576.

It is an arithmetic number, because the mean of its divisors is an integer number (102010576).

Almost surely, 2^204021151 is an apocalyptic number.

204021151 is a deficient number, since it is larger than the sum of its proper divisors (1).

204021151 is an equidigital number, since it uses as much as digits as its factorization.

204021151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 204021151 is about 14283.5972709958. The cubic root of 204021151 is about 588.6968759155.

Adding to 204021151 its reverse (151120402), we get a palindrome (355141553).

The spelling of 204021151 in words is "two hundred four million, twenty-one thousand, one hundred fifty-one".