110000000221 has 4 divisors (see below), whose sum is σ = 110000674492. Its totient is φ = 109999325952.

The previous prime is 110000000191. The next prime is 110000000249. The reversal of 110000000221 is 122000000011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122000000011 = 192611 ⋅633401.

It can be written as a sum of positive squares in 2 ways, for example, as 50227084996 + 59772915225 = 224114^2 + 244485^2 .

It is a cyclic number.

It is not a de Polignac number, because 110000000221 - 2⁵ = 110000000189 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 (110000003221) 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 3 ways as a sum of consecutive naturals, for example, 77821 + ... + 475453.

It is an arithmetic number, because the mean of its divisors is an integer number (27500168623).

Almost surely, 2^110000000221 is an apocalyptic number.

It is an amenable number.

110000000221 is a deficient number, since it is larger than the sum of its proper divisors (674271).

110000000221 is an equidigital number, since it uses as much as digits as its factorization.

110000000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674270.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 110000000221 its reverse (122000000011), we get a palindrome (232000000232).

The spelling of 110000000221 in words is "one hundred ten billion, two hundred twenty-one", and thus it is an aban number.