11429221 has 4 divisors (see below), whose sum is σ = 11437344. Its totient is φ = 11421100.

The previous prime is 11429207. The next prime is 11429227. The reversal of 11429221 is 12292411.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11429221 - 2¹³ = 11421029 is a prime.

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 a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11429192 and 11429201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11429227) 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, 1345 + ... + 4966.

It is an arithmetic number, because the mean of its divisors is an integer number (2859336).

Almost surely, 2^11429221 is an apocalyptic number.

It is an amenable number.

11429221 is a deficient number, since it is larger than the sum of its proper divisors (8123).

11429221 is an equidigital number, since it uses as much as digits as its factorization.

11429221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8122.

The product of its digits is 288, while the sum is 22.

The square root of 11429221 is about 3380.7130904589. The cubic root of 11429221 is about 225.2538435488.

The spelling of 11429221 in words is "eleven million, four hundred twenty-nine thousand, two hundred twenty-one".