11011033221 has 8 divisors (see below), whose sum is σ = 14735956320. Its totient is φ = 7313399472.

The previous prime is 11011033217. The next prime is 11011033237. The reversal of 11011033221 is 12233011011.

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 11011033221 - 2² = 11011033217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11011033221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011033321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6821395 + ... + 6823008.

It is an arithmetic number, because the mean of its divisors is an integer number (1841994540).

Almost surely, 2^11011033221 is an apocalyptic number.

It is an amenable number.

11011033221 is a deficient number, since it is larger than the sum of its proper divisors (3724923099).

11011033221 is a wasteful number, since it uses less digits than its factorization.

11011033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13644675.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11011033221 its reverse (12233011011), we get a palindrome (23244044232).

The spelling of 11011033221 in words is "eleven billion, eleven million, thirty-three thousand, two hundred twenty-one".