2221623316 has 24 divisors (see below), whose sum is σ = 4243732416. Its totient is φ = 1009245120.

The previous prime is 2221623247. The next prime is 2221623353. The reversal of 2221623316 is 6133261222.

It is a super-2 number, since 2×2221623316² = 9871220316389671712, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 67600 + ... + 94936.

It is an arithmetic number, because the mean of its divisors is an integer number (176822184).

Almost surely, 2^2221623316 is an apocalyptic number.

It is an amenable number.

2221623316 is a deficient number, since it is larger than the sum of its proper divisors (2022109100).

2221623316 is a wasteful number, since it uses less digits than its factorization.

2221623316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29199 (or 29197 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 2221623316 is about 47134.0992912774. The cubic root of 2221623316 is about 1304.8386379269.

Adding to 2221623316 its reverse (6133261222), we get a palindrome (8354884538).

The spelling of 2221623316 in words is "two billion, two hundred twenty-one million, six hundred twenty-three thousand, three hundred sixteen".