22004213 has 24 divisors (see below), whose sum is σ = 28064064. Its totient is φ = 16885440.

The previous prime is 22004189. The next prime is 22004221. The reversal of 22004213 is 31240022.

It is not a de Polignac number, because 22004213 - 2⁶ = 22004149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22004263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70145 + ... + 70457.

It is an arithmetic number, because the mean of its divisors is an integer number (1169336).

Almost surely, 2^22004213 is an apocalyptic number.

It is an amenable number.

22004213 is a deficient number, since it is larger than the sum of its proper divisors (6059851).

22004213 is a wasteful number, since it uses less digits than its factorization.

22004213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22004213 is about 4690.8648456335. The cubic root of 22004213 is about 280.2218182750.

Adding to 22004213 its reverse (31240022), we get a palindrome (53244235).

The spelling of 22004213 in words is "twenty-two million, four thousand, two hundred thirteen".