6222221111 has 4 divisors (see below), whose sum is σ = 6230128152. Its totient is φ = 6214314072.

The previous prime is 6222221011. The next prime is 6222221129. The reversal of 6222221111 is 1111222226.

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-6222221111 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6222221011) 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, 3952340 + ... + 3953913.

It is an arithmetic number, because the mean of its divisors is an integer number (1557532038).

Almost surely, 2^6222221111 is an apocalyptic number.

6222221111 is a deficient number, since it is larger than the sum of its proper divisors (7907041).

6222221111 is an equidigital number, since it uses as much as digits as its factorization.

6222221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7907040.

The product of its digits is 192, while the sum is 20.

The square root of 6222221111 is about 78881.0567310048. The cubic root of 6222221111 is about 1839.2826747620.

Adding to 6222221111 its reverse (1111222226), we get a palindrome (7333443337).

The spelling of 6222221111 in words is "six billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred eleven".