220801 has 4 divisors (see below), whose sum is σ = 252352. Its totient is φ = 189252.

The previous prime is 220793. The next prime is 220807. The reversal of 220801 is 108022.

220801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 108022 = 2 ⋅54011.

It is not a de Polignac number, because 220801 - 2³ = 220793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15765 + ... + 15778.

It is an arithmetic number, because the mean of its divisors is an integer number (63088).

2²²⁰⁸⁰¹ is an apocalyptic number.

It is an amenable number.

220801 is a deficient number, since it is larger than the sum of its proper divisors (31551).

220801 is an equidigital number, since it uses as much as digits as its factorization.

220801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31550.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 220801 is about 469.8946690483. The cubic root of 220801 is about 60.4412835607.

Adding to 220801 its reverse (108022), we get a palindrome (328823).

The spelling of 220801 in words is "two hundred twenty thousand, eight hundred one".