22103213 has 16 divisors (see below), whose sum is σ = 26879040. Its totient is φ = 17913600.

The previous prime is 22103209. The next prime is 22103219. The reversal of 22103213 is 31230122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22103213 - 2² = 22103209 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22103219) 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 in 15 ways as a sum of consecutive naturals, for example, 443 + ... + 6663.

It is an arithmetic number, because the mean of its divisors is an integer number (1679940).

Almost surely, 2^22103213 is an apocalyptic number.

It is an amenable number.

22103213 is a deficient number, since it is larger than the sum of its proper divisors (4775827).

22103213 is a wasteful number, since it uses less digits than its factorization.

22103213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6268.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22103213 is about 4701.4054281672. The cubic root of 22103213 is about 280.6414418370.

Adding to 22103213 its reverse (31230122), we get a palindrome (53333335).

The spelling of 22103213 in words is "twenty-two million, one hundred three thousand, two hundred thirteen".