22213066 has 4 divisors (see below), whose sum is σ = 33319602. Its totient is φ = 11106532.

The previous prime is 22213063. The next prime is 22213073. The reversal of 22213066 is 66031222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20025625 + 2187441 = 4475^2 + 1479^2 .

It is a super-2 number, since 2×22213066² = 986840602240712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22213063) 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 as a sum of consecutive naturals, namely, 5553265 + ... + 5553268.

Almost surely, 2^22213066 is an apocalyptic number.

22213066 is a deficient number, since it is larger than the sum of its proper divisors (11106536).

22213066 is a wasteful number, since it uses less digits than its factorization.

22213066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11106535.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 22213066 is about 4713.0739438290. The cubic root of 22213066 is about 281.1056031782.

Adding to 22213066 its reverse (66031222), we get a palindrome (88244288).

The spelling of 22213066 in words is "twenty-two million, two hundred thirteen thousand, sixty-six".