2221316 has 12 divisors (see below), whose sum is σ = 3898188. Its totient is φ = 1107552.

The previous prime is 2221301. The next prime is 2221321. The reversal of 2221316 is 6131222.

It can be written as a sum of positive squares in 2 ways, for example, as 1020100 + 1201216 = 1010^2 + 1096^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2221294 and 2221303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730 + ... + 2726.

It is an arithmetic number, because the mean of its divisors is an integer number (324849).

2^2221316 is an apocalyptic number.

It is an amenable number.

2221316 is a deficient number, since it is larger than the sum of its proper divisors (1676872).

2221316 is a wasteful number, since it uses less digits than its factorization.

2221316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558 (or 1556 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 2221316 is about 1490.4079978315. The cubic root of 2221316 is about 130.4778469269.

Adding to 2221316 its reverse (6131222), we get a palindrome (8352538).

The spelling of 2221316 in words is "two million, two hundred twenty-one thousand, three hundred sixteen".