22212313 has 4 divisors (see below), whose sum is σ = 22309540. Its totient is φ = 22115088.

The previous prime is 22212301. The next prime is 22212329. The reversal of 22212313 is 31321222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10942864 + 11269449 = 3308^2 + 3357^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212313 - 2⁹ = 22211801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48270 + ... + 48727.

It is an arithmetic number, because the mean of its divisors is an integer number (5577385).

Almost surely, 2^22212313 is an apocalyptic number.

It is an amenable number.

22212313 is a deficient number, since it is larger than the sum of its proper divisors (97227).

22212313 is an equidigital number, since it uses as much as digits as its factorization.

22212313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97226.

The product of its digits is 144, while the sum is 16.

The square root of 22212313 is about 4712.9940589820. The cubic root of 22212313 is about 281.1024267457.

Adding to 22212313 its reverse (31321222), we get a palindrome (53533535).

The spelling of 22212313 in words is "twenty-two million, two hundred twelve thousand, three hundred thirteen".