22213249 has 4 divisors (see below), whose sum is σ = 22302000. Its totient is φ = 22124500.

The previous prime is 22213183. The next prime is 22213259. The reversal of 22213249 is 94231222.

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.

It is a cyclic number.

It is not a de Polignac number, because 22213249 - 2⁹ = 22212737 is a prime.

It is a super-2 number, since 2×22213249² = 986856862272002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22213259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43999 + ... + 44500.

It is an arithmetic number, because the mean of its divisors is an integer number (5575500).

Almost surely, 2^22213249 is an apocalyptic number.

It is an amenable number.

22213249 is a deficient number, since it is larger than the sum of its proper divisors (88751).

22213249 is an equidigital number, since it uses as much as digits as its factorization.

22213249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88750.

The product of its digits is 1728, while the sum is 25.

The square root of 22213249 is about 4713.0933578702. The cubic root of 22213249 is about 281.1063751290.

The spelling of 22213249 in words is "twenty-two million, two hundred thirteen thousand, two hundred forty-nine".