1111104221 has 4 divisors (see below), whose sum is σ = 1112089500. Its totient is φ = 1110118944.

The previous prime is 1111104209. The next prime is 1111104257. The reversal of 1111104221 is 1224011111.

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 587335225 + 523768996 = 24235^2 + 22886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111104221 - 2¹⁰ = 1111103197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111104196 and 1111104205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111104121) 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, 490946 + ... + 493203.

It is an arithmetic number, because the mean of its divisors is an integer number (278022375).

Almost surely, 2^1111104221 is an apocalyptic number.

It is an amenable number.

1111104221 is a deficient number, since it is larger than the sum of its proper divisors (985279).

1111104221 is an equidigital number, since it uses as much as digits as its factorization.

1111104221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985278.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1111104221 is about 33333.2299815064. The cubic root of 1111104221 is about 1035.7420277291.

Adding to 1111104221 its reverse (1224011111), we get a palindrome (2335115332).

The spelling of 1111104221 in words is "one billion, one hundred eleven million, one hundred four thousand, two hundred twenty-one".