22242213 has 48 divisors (see below), whose sum is σ = 38438400. Its totient is φ = 12130560.

The previous prime is 22242211. The next prime is 22242251. The reversal of 22242213 is 31224222.

It is not a de Polignac number, because 22242213 - 2¹ = 22242211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22242211) 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 47 ways as a sum of consecutive naturals, for example, 204003 + ... + 204111.

It is an arithmetic number, because the mean of its divisors is an integer number (800800).

Almost surely, 2^22242213 is an apocalyptic number.

It is an amenable number.

22242213 is a deficient number, since it is larger than the sum of its proper divisors (16196187).

22242213 is a wasteful number, since it uses less digits than its factorization.

22242213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 239 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 22242213 is about 4716.1650734469. The cubic root of 22242213 is about 281.2285008751.

Adding to 22242213 its reverse (31224222), we get a palindrome (53466435).

Subtracting 22242213 from its reverse (31224222), we obtain a square (8982009 = 2997²).

The spelling of 22242213 in words is "twenty-two million, two hundred forty-two thousand, two hundred thirteen".