11001229 has 4 divisors (see below), whose sum is σ = 11010976. Its totient is φ = 10991484.

The previous prime is 11001217. The next prime is 11001239. The reversal of 11001229 is 92210011.

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 11001229 - 2⁵ = 11001197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2919 + ... + 5524.

It is an arithmetic number, because the mean of its divisors is an integer number (2752744).

Almost surely, 2^11001229 is an apocalyptic number.

It is an amenable number.

11001229 is a deficient number, since it is larger than the sum of its proper divisors (9747).

11001229 is an equidigital number, since it uses as much as digits as its factorization.

11001229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 11001229 is about 3316.8100639018. The cubic root of 11001229 is about 222.4062913895.

The spelling of 11001229 in words is "eleven million, one thousand, two hundred twenty-nine".