11100003221 has 4 divisors (see below), whose sum is σ = 11198233452. Its totient is φ = 11001772992.

The previous prime is 11100003217. The next prime is 11100003241. The reversal of 11100003221 is 12230000111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 749992996 + 10350010225 = 27386^2 + 101735^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100003221 - 2² = 11100003217 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 (11100003241) 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, 49114946 + ... + 49115171.

It is an arithmetic number, because the mean of its divisors is an integer number (2799558363).

Almost surely, 2^11100003221 is an apocalyptic number.

It is an amenable number.

11100003221 is a deficient number, since it is larger than the sum of its proper divisors (98230231).

11100003221 is an equidigital number, since it uses as much as digits as its factorization.

11100003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98230230.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11100003221 its reverse (12230000111), we get a palindrome (23330003332).

The spelling of 11100003221 in words is "eleven billion, one hundred million, three thousand, two hundred twenty-one".