22229213 has 4 divisors (see below), whose sum is σ = 22246908. Its totient is φ = 22211520.

The previous prime is 22229197. The next prime is 22229227. The reversal of 22229213 is 31292222.

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 2630884 + 19598329 = 1622^2 + 4427^2 .

It is not a de Polignac number, because 22229213 - 2⁴ = 22229197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22229413) 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, 6806 + ... + 9527.

It is an arithmetic number, because the mean of its divisors is an integer number (5561727).

Almost surely, 2^22229213 is an apocalyptic number.

It is an amenable number.

22229213 is a deficient number, since it is larger than the sum of its proper divisors (17695).

22229213 is a wasteful number, since it uses less digits than its factorization.

22229213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17694.

The product of its digits is 864, while the sum is 23.

The square root of 22229213 is about 4714.7866335604. The cubic root of 22229213 is about 281.1736999280.

The spelling of 22229213 in words is "twenty-two million, two hundred twenty-nine thousand, two hundred thirteen".