1121224109 has 2 divisors, whose sum is σ = 1121224110. Its totient is φ = 1121224108.

The previous prime is 1121224099. The next prime is 1121224157. The reversal of 1121224109 is 9014221211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1097066884 + 24157225 = 33122^2 + 4915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121224109 - 2¹⁶ = 1121158573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121224189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560612054 + 560612055.

It is an arithmetic number, because the mean of its divisors is an integer number (560612055).

Almost surely, 2^1121224109 is an apocalyptic number.

It is an amenable number.

1121224109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121224109 is an equidigital number, since it uses as much as digits as its factorization.

1121224109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1121224109 is about 33484.6846931549. The cubic root of 1121224109 is about 1038.8770265902.

It can be divided in two parts, 112 and 1224109, that added together give a palindrome (1224221).

The spelling of 1121224109 in words is "one billion, one hundred twenty-one million, two hundred twenty-four thousand, one hundred nine".