2221047165 has 16 divisors (see below), whose sum is σ = 3554273088. Its totient is φ = 1184359296.

The previous prime is 2221047163. The next prime is 2221047167. The reversal of 2221047165 is 5617401222.

It is an interprime number because it is at equal distance from previous prime (2221047163) and next prime (2221047167).

It is not a de Polignac number, because 2221047165 - 2¹ = 2221047163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221047163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139714 + ... + 154796.

It is an arithmetic number, because the mean of its divisors is an integer number (222142068).

Almost surely, 2^2221047165 is an apocalyptic number.

It is an amenable number.

2221047165 is a deficient number, since it is larger than the sum of its proper divisors (1333225923).

2221047165 is a wasteful number, since it uses less digits than its factorization.

2221047165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24908.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2221047165 is about 47127.9870671345. The cubic root of 2221047165 is about 1304.7258301617.

Adding to 2221047165 its reverse (5617401222), we get a palindrome (7838448387).

The spelling of 2221047165 in words is "two billion, two hundred twenty-one million, forty-seven thousand, one hundred sixty-five".