22213513 has 12 divisors (see below), whose sum is σ = 26472852. Its totient is φ = 18574080.

The previous prime is 22213493. The next prime is 22213517. The reversal of 22213513 is 31531222.

It can be written as a sum of positive squares in 2 ways, for example, as 2393209 + 19820304 = 1547^2 + 4452^2 .

It is not a de Polignac number, because 22213513 - 2⁵ = 22213481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22213517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3520 + ... + 7537.

It is an arithmetic number, because the mean of its divisors is an integer number (2206071).

Almost surely, 2^22213513 is an apocalyptic number.

It is an amenable number.

22213513 is a deficient number, since it is larger than the sum of its proper divisors (4259339).

22213513 is a wasteful number, since it uses less digits than its factorization.

22213513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112 (or 11105 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 22213513 is about 4713.1213648706. The cubic root of 22213513 is about 281.1074887555.

Adding to 22213513 its reverse (31531222), we get a palindrome (53744735).

The spelling of 22213513 in words is "twenty-two million, two hundred thirteen thousand, five hundred thirteen".