22213045 has 4 divisors (see below), whose sum is σ = 26655660. Its totient is φ = 17770432.

The previous prime is 22213007. The next prime is 22213049. The reversal of 22213045 is 54031222.

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 7879249 + 14333796 = 2807^2 + 3786^2 .

It is a cyclic number.

It is not a de Polignac number, because 22213045 - 2¹¹ = 22210997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2221300 + ... + 2221309.

It is an arithmetic number, because the mean of its divisors is an integer number (6663915).

Almost surely, 2^22213045 is an apocalyptic number.

It is an amenable number.

22213045 is a deficient number, since it is larger than the sum of its proper divisors (4442615).

22213045 is an equidigital number, since it uses as much as digits as its factorization.

22213045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4442614.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22213045 is about 4713.0717159831. The cubic root of 22213045 is about 281.1055145934.

Adding to 22213045 its reverse (54031222), we get a palindrome (76244267).

The spelling of 22213045 in words is "twenty-two million, two hundred thirteen thousand, forty-five".