2221065544 has 16 divisors (see below), whose sum is σ = 4226655600. Its totient is φ = 1093957392.

The previous prime is 2221065491. The next prime is 2221065557. The reversal of 2221065544 is 4455601222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2071354 + ... + 2072425.

It is an arithmetic number, because the mean of its divisors is an integer number (264165975).

Almost surely, 2^2221065544 is an apocalyptic number.

It is an amenable number.

2221065544 is a deficient number, since it is larger than the sum of its proper divisors (2005590056).

2221065544 is a wasteful number, since it uses less digits than its factorization.

2221065544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143852 (or 4143848 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 2221065544 is about 47128.1820570240. The cubic root of 2221065544 is about 1304.7294289882.

Adding to 2221065544 its reverse (4455601222), we get a palindrome (6676666766).

The spelling of 2221065544 in words is "two billion, two hundred twenty-one million, sixty-five thousand, five hundred forty-four".