220242111 has 4 divisors (see below), whose sum is σ = 293656152. Its totient is φ = 146828072.

The previous prime is 220242049. The next prime is 220242131. The reversal of 220242111 is 111242022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220242111 - 2⁹ = 220241599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220242131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36707016 + ... + 36707021.

It is an arithmetic number, because the mean of its divisors is an integer number (73414038).

Almost surely, 2^220242111 is an apocalyptic number.

220242111 is a deficient number, since it is larger than the sum of its proper divisors (73414041).

220242111 is an equidigital number, since it uses as much as digits as its factorization.

220242111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73414040.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 220242111 is about 14840.5562901126. The cubic root of 220242111 is about 603.9024437486.

Adding to 220242111 its reverse (111242022), we get a palindrome (331484133).

The spelling of 220242111 in words is "two hundred twenty million, two hundred forty-two thousand, one hundred eleven".