220441231 has 2 divisors, whose sum is σ = 220441232. Its totient is φ = 220441230.

The previous prime is 220441229. The next prime is 220441241. The reversal of 220441231 is 132144022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220441231 - 2¹ = 220441229 is a prime.

It is a super-2 number, since 2×220441231² = 97188672649590722, which contains 22 as substring.

Together with 220441229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 220441199 and 220441208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220441241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110220615 + 110220616.

It is an arithmetic number, because the mean of its divisors is an integer number (110220616).

Almost surely, 2^220441231 is an apocalyptic number.

220441231 is a deficient number, since it is larger than the sum of its proper divisors (1).

220441231 is an equidigital number, since it uses as much as digits as its factorization.

220441231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 220441231 is about 14847.2634178828. The cubic root of 220441231 is about 604.0843841797.

Adding to 220441231 its reverse (132144022), we get a palindrome (352585253).

The spelling of 220441231 in words is "two hundred twenty million, four hundred forty-one thousand, two hundred thirty-one".