204220801 has 2 divisors, whose sum is σ = 204220802. Its totient is φ = 204220800.

The previous prime is 204220789. The next prime is 204220823. The reversal of 204220801 is 108022402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108180801 + 96040000 = 10401^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 204220801 - 2¹¹ = 204218753 is a prime.

It is a super-2 number, since 2×204220801² = 83412271122163202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204227801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102110400 + 102110401.

It is an arithmetic number, because the mean of its divisors is an integer number (102110401).

Almost surely, 2^204220801 is an apocalyptic number.

It is an amenable number.

204220801 is a deficient number, since it is larger than the sum of its proper divisors (1).

204220801 is an equidigital number, since it uses as much as digits as its factorization.

204220801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 204220801 is about 14290.5843477445. The cubic root of 204220801 is about 588.8888413288. Note that the first 4 decimals are identical.

The spelling of 204220801 in words is "two hundred four million, two hundred twenty thousand, eight hundred one".