1122726217 has 4 divisors (see below), whose sum is σ = 1123069636. Its totient is φ = 1122382800.

The previous prime is 1122726211. The next prime is 1122726221. The reversal of 1122726217 is 7126272211.

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 304537401 + 818188816 = 17451^2 + 28604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122726217 - 2⁷ = 1122726089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122726211) 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, 166758 + ... + 173359.

It is an arithmetic number, because the mean of its divisors is an integer number (280767409).

Almost surely, 2^1122726217 is an apocalyptic number.

It is an amenable number.

1122726217 is a deficient number, since it is larger than the sum of its proper divisors (343419).

1122726217 is an equidigital number, since it uses as much as digits as its factorization.

1122726217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343418.

The product of its digits is 4704, while the sum is 31.

The square root of 1122726217 is about 33507.1069625535. The cubic root of 1122726217 is about 1039.3407486736.

Adding to 1122726217 its reverse (7126272211), we get a palindrome (8248998428).

The spelling of 1122726217 in words is "one billion, one hundred twenty-two million, seven hundred twenty-six thousand, two hundred seventeen".