11033221111 has 8 divisors (see below), whose sum is σ = 12039189264. Its totient is φ = 10027744320.

The previous prime is 11033221061. The next prime is 11033221223. The reversal of 11033221111 is 11112233011.

It is a happy number.

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

It is not a de Polignac number, because 11033221111 - 2¹⁷ = 11033090039 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 (11033221711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75076 + ... + 166441.

It is an arithmetic number, because the mean of its divisors is an integer number (1504898658).

Almost surely, 2^11033221111 is an apocalyptic number.

11033221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11033221111 is a deficient number, since it is larger than the sum of its proper divisors (1005968153).

11033221111 is a wasteful number, since it uses less digits than its factorization.

11033221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245681.

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

Adding to 11033221111 its reverse (11112233011), we get a palindrome (22145454122).

The spelling of 11033221111 in words is "eleven billion, thirty-three million, two hundred twenty-one thousand, one hundred eleven".