6622221111 has 16 divisors (see below), whose sum is σ = 10051119360. Its totient is φ = 3838968320.

The previous prime is 6622221059. The next prime is 6622221161. The reversal of 6622221111 is 1111222266.

It is not a de Polignac number, because 6622221111 - 2¹⁷ = 6622090039 is a prime.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6622221161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4361706 + ... + 4363223.

It is an arithmetic number, because the mean of its divisors is an integer number (628194960).

Almost surely, 2^6622221111 is an apocalyptic number.

6622221111 is a deficient number, since it is larger than the sum of its proper divisors (3428898249).

6622221111 is a wasteful number, since it uses less digits than its factorization.

6622221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8724966.

The product of its digits is 576, while the sum is 24.

The square root of 6622221111 is about 81377.0306106090. The cubic root of 6622221111 is about 1877.8802416145.

Adding to 6622221111 its reverse (1111222266), we get a palindrome (7733443377).

The spelling of 6622221111 in words is "six billion, six hundred twenty-two million, two hundred twenty-one thousand, one hundred eleven".