202217149 has 2 divisors, whose sum is σ = 202217150. Its totient is φ = 202217148.

The previous prime is 202217129. The next prime is 202217243. The reversal of 202217149 is 941712202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110880900 + 91336249 = 10530^2 + 9557^2 .

It is a cyclic number.

It is not a de Polignac number, because 202217149 - 2⁵ = 202217117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202217129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101108574 + 101108575.

It is an arithmetic number, because the mean of its divisors is an integer number (101108575).

Almost surely, 2^202217149 is an apocalyptic number.

It is an amenable number.

202217149 is a deficient number, since it is larger than the sum of its proper divisors (1).

202217149 is an equidigital number, since it uses as much as digits as its factorization.

202217149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 202217149 is about 14220.3076267709. The cubic root of 202217149 is about 586.9566053862.

The spelling of 202217149 in words is "two hundred two million, two hundred seventeen thousand, one hundred forty-nine".