6221166611 has 16 divisors (see below), whose sum is σ = 7056056448. Its totient is φ = 5435284800.

The previous prime is 6221166593. The next prime is 6221166617. The reversal of 6221166611 is 1166611226.

It is a de Polignac number, because none of the positive numbers 2^k-6221166611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6221166617) 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, 72725 + ... + 133158.

It is an arithmetic number, because the mean of its divisors is an integer number (441003528).

Almost surely, 2^6221166611 is an apocalyptic number.

6221166611 is a deficient number, since it is larger than the sum of its proper divisors (834889837).

6221166611 is a wasteful number, since it uses less digits than its factorization.

6221166611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206002.

The product of its digits is 5184, while the sum is 32.

The square root of 6221166611 is about 78874.3723334772. The cubic root of 6221166611 is about 1839.1787658243.

Adding to 6221166611 its reverse (1166611226), we get a palindrome (7387777837).

The spelling of 6221166611 in words is "six billion, two hundred twenty-one million, one hundred sixty-six thousand, six hundred eleven".