220441121 has 2 divisors, whose sum is σ = 220441122. Its totient is φ = 220441120.

The previous prime is 220441103. The next prime is 220441127. The reversal of 220441121 is 121144022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170668096 + 49773025 = 13064^2 + 7055^2 .

It is a cyclic number.

It is not a de Polignac number, because 220441121 - 2¹⁰ = 220440097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220441121.

It is not a weakly prime, because it can be changed into another prime (220441127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110220560 + 110220561.

It is an arithmetic number, because the mean of its divisors is an integer number (110220561).

Almost surely, 2^220441121 is an apocalyptic number.

It is an amenable number.

220441121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220441121 is an equidigital number, since it uses as much as digits as its factorization.

220441121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 220441121 is about 14847.2597134960. The cubic root of 220441121 is about 604.0842837005.

Adding to 220441121 its reverse (121144022), we get a palindrome (341585143).

The spelling of 220441121 in words is "two hundred twenty million, four hundred forty-one thousand, one hundred twenty-one".