220291 has 2 divisors, whose sum is σ = 220292. Its totient is φ = 220290.

The previous prime is 220279. The next prime is 220301. The reversal of 220291 is 192022.

It is a happy number.

220291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220291 - 2⁷ = 220163 is a prime.

It is not a weakly prime, because it can be changed into another prime (220391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110145 + 110146.

It is an arithmetic number, because the mean of its divisors is an integer number (110146).

2²²⁰²⁹¹ is an apocalyptic number.

220291 is a deficient number, since it is larger than the sum of its proper divisors (1).

220291 is an equidigital number, since it uses as much as digits as its factorization.

220291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 220291 is about 469.3516805126. The cubic root of 220291 is about 60.3947124883.

The spelling of 220291 in words is "two hundred twenty thousand, two hundred ninety-one".