1122226561 has 2 divisors, whose sum is σ = 1122226562. Its totient is φ = 1122226560.

The previous prime is 1122226541. The next prime is 1122226619. The reversal of 1122226561 is 1656222211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1053651600 + 68574961 = 32460^2 + 8281^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122226561 - 2⁵ = 1122226529 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122226531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561113280 + 561113281.

It is an arithmetic number, because the mean of its divisors is an integer number (561113281).

Almost surely, 2^1122226561 is an apocalyptic number.

It is an amenable number.

1122226561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122226561 is an equidigital number, since it uses as much as digits as its factorization.

1122226561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 1122226561 is about 33499.6501623524. The cubic root of 1122226561 is about 1039.1865437005.

Adding to 1122226561 its reverse (1656222211), we get a palindrome (2778448772).

The spelling of 1122226561 in words is "one billion, one hundred twenty-two million, two hundred twenty-six thousand, five hundred sixty-one".