11100100225 has 12 divisors (see below), whose sum is σ = 13778842924. Its totient is φ = 8870584320.

The previous prime is 11100100211. The next prime is 11100100243. The reversal of 11100100225 is 52200100111.

It can be written as a sum of positive squares in 6 ways, for example, as 1740892176 + 9359208049 = 41724^2 + 96743^2 .

It is not a de Polignac number, because 11100100225 - 2⁷ = 11100100097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213504 + ... + 260353.

Almost surely, 2^11100100225 is an apocalyptic number.

It is an amenable number.

11100100225 is a deficient number, since it is larger than the sum of its proper divisors (2678742699).

11100100225 is an equidigital number, since it uses as much as digits as its factorization.

11100100225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474804 (or 474799 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

Adding to 11100100225 its reverse (52200100111), we get a palindrome (63300200336).

The spelling of 11100100225 in words is "eleven billion, one hundred million, one hundred thousand, two hundred twenty-five".