2221005316 has 6 divisors (see below), whose sum is σ = 3886759310. Its totient is φ = 1110502656.

The previous prime is 2221005221. The next prime is 2221005317. The reversal of 2221005316 is 6135001222.

It can be written as a sum of positive squares in only one way, i.e., 1730560000 + 490445316 = 41600^2 + 22146^2 .

It is a super-2 number, since 2×2221005316² = 9865729227400519712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2221005317) by changing a digit.

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 as a sum of consecutive naturals, namely, 277625661 + ... + 277625668.

Almost surely, 2^2221005316 is an apocalyptic number.

It is an amenable number.

2221005316 is a deficient number, since it is larger than the sum of its proper divisors (1665753994).

2221005316 is a wasteful number, since it uses less digits than its factorization.

2221005316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555251333 (or 555251331 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2221005316 is about 47127.5430719659. The cubic root of 2221005316 is about 1304.7176355565.

Adding to 2221005316 its reverse (6135001222), we get a palindrome (8356006538).

The spelling of 2221005316 in words is "two billion, two hundred twenty-one million, five thousand, three hundred sixteen".