22333213 has 4 divisors (see below), whose sum is σ = 25523680. Its totient is φ = 19142748.

The previous prime is 22333153. The next prime is 22333217. The reversal of 22333213 is 31233322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31233322 = 2 ⋅15616661.

It is a cyclic number.

It is not a de Polignac number, because 22333213 - 2²¹ = 20236061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22333217) 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 3 ways as a sum of consecutive naturals, for example, 1595223 + ... + 1595236.

It is an arithmetic number, because the mean of its divisors is an integer number (6380920).

Almost surely, 2^22333213 is an apocalyptic number.

It is an amenable number.

22333213 is a deficient number, since it is larger than the sum of its proper divisors (3190467).

22333213 is an equidigital number, since it uses as much as digits as its factorization.

22333213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190466.

The product of its digits is 648, while the sum is 19.

The square root of 22333213 is about 4725.8028947471. The cubic root of 22333213 is about 281.6115108944.

Adding to 22333213 its reverse (31233322), we get a palindrome (53566535).

The spelling of 22333213 in words is "twenty-two million, three hundred thirty-three thousand, two hundred thirteen".