4220111 has 4 divisors (see below), whose sum is σ = 4822992. Its totient is φ = 3617232.

The previous prime is 4220081. The next prime is 4220137. The reversal of 4220111 is 1110224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4220111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4220092 and 4220101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220141) 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, 301430 + ... + 301443.

It is an arithmetic number, because the mean of its divisors is an integer number (1205748).

Almost surely, 2^4220111 is an apocalyptic number.

4220111 is a deficient number, since it is larger than the sum of its proper divisors (602881).

4220111 is an equidigital number, since it uses as much as digits as its factorization.

4220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602880.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 4220111 is about 2054.2908752170. The cubic root of 4220111 is about 161.5999757989.

Adding to 4220111 its reverse (1110224), we get a palindrome (5330335).

The spelling of 4220111 in words is "four million, two hundred twenty thousand, one hundred eleven".