202221289 has 2 divisors, whose sum is σ = 202221290. Its totient is φ = 202221288.

The previous prime is 202221281. The next prime is 202221311. The reversal of 202221289 is 982122202.

202221289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201867264 + 354025 = 14208^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221289 - 2³ = 202221281 is a prime.

It is equal to p_11195173 and since 202221289 and 11195173 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (202221281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110644 + 101110645.

It is an arithmetic number, because the mean of its divisors is an integer number (101110645).

Almost surely, 2^202221289 is an apocalyptic number.

It is an amenable number.

202221289 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221289 is an equidigital number, since it uses as much as digits as its factorization.

202221289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 202221289 is about 14220.4531924971. The cubic root of 202221289 is about 586.9606109544.

The spelling of 202221289 in words is "two hundred two million, two hundred twenty-one thousand, two hundred eighty-nine".