2221056611 has 12 divisors (see below), whose sum is σ = 2313153024. Its totient is φ = 2132474400.

The previous prime is 2221056601. The next prime is 2221056631. The reversal of 2221056611 is 1166501222.

It is a de Polignac number, because none of the positive numbers 2^k-2221056611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221056601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144926 + ... + 159516.

It is an arithmetic number, because the mean of its divisors is an integer number (192762752).

Almost surely, 2^2221056611 is an apocalyptic number.

2221056611 is a deficient number, since it is larger than the sum of its proper divisors (92096413).

2221056611 is a wasteful number, since it uses less digits than its factorization.

2221056611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14830 (or 14801 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 2221056611 is about 47128.0872834873. The cubic root of 2221056611 is about 1304.7276798032.

Adding to 2221056611 its reverse (1166501222), we get a palindrome (3387557833).

The spelling of 2221056611 in words is "two billion, two hundred twenty-one million, fifty-six thousand, six hundred eleven".