22212241 has 4 divisors (see below), whose sum is σ = 22230592. Its totient is φ = 22193892.

The previous prime is 22212233. The next prime is 22212257. The reversal of 22212241 is 14221222.

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 22212241 - 2³ = 22212233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212271) 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, 7221 + ... + 9826.

It is an arithmetic number, because the mean of its divisors is an integer number (5557648).

Almost surely, 2^22212241 is an apocalyptic number.

It is an amenable number.

22212241 is a deficient number, since it is larger than the sum of its proper divisors (18351).

22212241 is a wasteful number, since it uses less digits than its factorization.

22212241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18350.

The product of its digits is 128, while the sum is 16.

The square root of 22212241 is about 4712.9864205194. The cubic root of 22212241 is about 281.1021230194.

Adding to 22212241 its product of digits (128), we get a square (22212369 = 4713²).

Adding to 22212241 its reverse (14221222), we get a palindrome (36433463).

The spelling of 22212241 in words is "twenty-two million, two hundred twelve thousand, two hundred forty-one".