11422221 has 8 divisors (see below), whose sum is σ = 15327264. Its totient is φ = 7566000.

The previous prime is 11422217. The next prime is 11422241. The reversal of 11422221 is 12222411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11422221 - 2² = 11422217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11422221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11422241) 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 7 ways as a sum of consecutive naturals, for example, 11655 + ... + 12596.

It is an arithmetic number, because the mean of its divisors is an integer number (1915908).

Almost surely, 2^11422221 is an apocalyptic number.

It is an amenable number.

11422221 is a deficient number, since it is larger than the sum of its proper divisors (3905043).

11422221 is a wasteful number, since it uses less digits than its factorization.

11422221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24411.

The product of its digits is 64, while the sum is 15.

The square root of 11422221 is about 3379.6776473504. The cubic root of 11422221 is about 225.2078474446.

Adding to 11422221 its reverse (12222411), we get a palindrome (23644632).

The spelling of 11422221 in words is "eleven million, four hundred twenty-two thousand, two hundred twenty-one".